Answer:
Changes can occur to physical properties of a substance, but the chemical compostionof the substance will remain the same
Two groups of related living things are no longer considered to be the same species when
a. They can no longer interbreed.
b. They do not eat the same food.
c. They do not look the same.
d. They become physically separated from each other.
Answer:
They can no longer interbreed
Explanation:
Green plants excrete _______ gas through their leaves.I need answers!!!!
Answer:
In green plants, the carbon dioxide discharged during breath gets used during photosynthesis. Oxygen is a side-effect produced during photosynthesis, and exits through stomata, root cell dividers, and different courses.
Explanation:
1. Calculate If 1000 units of energy are available at
the producer level of the energy pyramid, about
how many units are available for first-level con-
sumers? Second-level consumers? Third-level
consumers?
Answer:
first-level consumers- about 100units
Second-level consumers- about 10units
Third-level consumers- about 1unit
Explanation:
A food chain represents the series of energy transfer from one organism to another. This energy is transferred when one organism feeds on another organism. A food chain always starts with a PRODUCER, which is an organism capable of producing its own food via photosynthesis. The producer creates the energy that is transferred as the food chain progresses.
However, only about 10% of the available energy in one organism is transferred to another, this is because most of the energy (about 90%) is lost as heat when the organism undergoes metabolic activities. Hence, if 1000units of energy are available at the producer level, a primary/first level consumer will feed on the producer and 10/100 × 1000 = 100units of energy will be available for the primary/first level consumer.
Likewise, 10% of 100units= 10 units of energy will be available for the second level consumers when it feed on the first level consumers. Lastly, 10% of 10units = 1 unit will be available for third level consumer when it feeds on second level consumer.
Seth tests some objects against each end of a bar magnet. One object he tested is attracted to both ends of the magnet. Which item is MOST LIKELY the object Seth tested?
A) battery
B) iron needle
C) plastic spoon
D) another bar magnet
Answer:
d
because + side would attract to the - of the mystery object, and vise versa
[WILL GIVE BRAINLIEST] Which description explains why there are two high and two low tides in a day?
Earth moves closer to the sun and moon twice a day.
Earth revolves around the tidal bulges created by gravitational forces.
Earth rotates in and out of a tidal bulge twice a day.
The moon's gravity increases over the oceans and decreases over the land.
Answer:
the moon's gravity increases over the oceans and decreases over the land
Which of the following have been changed or altered
due to climate change.
A. Droughts
B. Flooding
C. Melting of polar ice caps
D. All of the above
Answer:
D.
Explanation:
Droughts come from an intense increase in temperature. This causes water/moisture to evaporate from the ground. This is caused by greenhouse gas emissions which makes things a lot warmer. Thus, the temperature rises.
C and B are linked. The icecaps melt which cause the water levels to rise. When the icecaps melt, the water goes into the ocean and causes a rising in the sea level, thus meaning floods can happen.
Droughts, flooding and melting of polar ice caps have been altered or changed due to climate change.
What are the effects of climate change?A change, which comprises both global warming and its influence on the weather patterns of the Earth is known as a climate change. There have been many periods of climate change, however, the present changes are more brisk and are not because of any kind of natural events.
The change in climate is resulting in the melting of polar ice caps, which eventually results in the elevation of sea levels and the oceans are turning warmer than before. Climate change is resulting in more intense droughts and flooding. The continuous change in climate due to human activities are posing a threat to the species, places, and livelihoods.
Thus, the correct answer is option D, that is, all of the above.
Find out more information about climate change here:
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Two cells in the same organism differ only in the number of chloroplasts they contain. The first cell has multiple chloroplasts,
and the second cell has very few. What would most likely characterize these cells?
O There would be no difference between the functioning of the cells because the chloroplasts are not essential cell
structures
The second cell would become larger because it would have fewer chloroplasts regulating its size and shape.
O The second cell would shrink because it would not be able to store water and maintain cell shape.
The second cell would not be able to produce as much food because it could not capture sunlight
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Answer:
The second cell would not be able to produce as much food because it could not capture sunlight.
Explanation:
The second cell would not be able to produce as much food because it could not capture sunlight. The number of chloroplasts in a cell can also affect its shape and size, as well as its ability to store water, but the primary function of chloroplasts is to produce food through photosynthesis.
What are chloroplasts?Chloroplasts are organelles found in plant cells and some algae that are responsible for photosynthesis, the process by which plants convert light energy into chemical energy in the form of glucose. They are typically oval-shaped and range in size from 5 to 10 microns in diameter.
The chloroplast is surrounded by two membranes, an outer membrane, and an inner membrane, with a space between them known as the intermembrane space. The inner membrane encloses a fluid-filled space called the stroma, which contains enzymes and other molecules needed for photosynthesis.
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Which of the following describes acid rain?
A. coal burning power plants releasing large amounts of sulfur
B. foaming agents or plastics releasing chloroflourocarbons
C. excessive carbon dioxide blanketing the earth
D. overuse of nitrogen-containing materials polluting bodies of water
Answer:
a
Explanation:
Definition. "Acid rain" is a popular term referring to the deposition of a mixture from wet (rain, snow, sleet, fog, cloudwater, and dew) and dry (acidifying particles and gases) acidic components. ... Unpolluted rain can also contain other chemicals which affect its pH (acidity level).
Select all the correct answers.
Betty learned about embryology in her science class. At home, her brother Nathan noticed the human embryo and the fish embryo in her science notebook. He remarked that the embryos looked the same. How can this be true?
Both embryos have pharyngeal arches.
The fish embryo has evidence of lungs.
The human embryo has scaly skin.
Both embryos have fins.
Both embryos have a notochord.
Answer:
They both have pharyngeal arches.
They both have notochords.
The term embryology refers to the study of the branch of science that has to do with the study of development of the embryo of organisms. It provides powerful evidence for the theory of evolution.
The both embryos of human and fish are the same because;
They both have pharyngeal arches.They both have notochords.Learn more about embryology:https://brainly.com/question/13033870?
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Describe at least one part of the experiment procedure you thought was essential for getting good results. Did you find that certain steps in the procedure had to be followed carefully to get consistent results? If you wanted better results, do you think there is a step that could have been added to the procedure?
Answer:
Control environment is the most important procedures for getting good results.
Explanation:
SorryIts very late.
Answer:
timing was very imporatn in this lab because if you didn't record the data and temperatures of the water at those certain times, your experiment wouldn't have gone right.
Explanation:
chem lab 6
What effect do body fossils have on how people understand dinosaurs?
A)They show the types of food dinosaurs ate.
B)They give evidence of how prehistoric life behaved.
C)They let people know what dinosauts looked like.
D)The reveal how the dinosaurs raised their young.
Answer:
c they let people know what dinosaurs looked like
In sexual reproduction, what fraction of genes does each parent contribute to the offspring?
1/2
3/4
1/3
1/4
Answer:
1/2
Explanation:
Well it's like you get 23 chromosomes from each parent. 23 from your dad, and 23 from your mom. In total that's 48 chromosomes, which 23 pairs of chromosmes. Have you ever seen those DNA testing kit commercials for "23 and me" yeah that's based off of the fact that every body has 23 chromosomes. Anyways the main thing is that each parent contributes 1/2 of genes to the offspring.
Proteins synthesis is accomplished primarily by the interaction of which two cell structures?
A:vacuoles and mitochondria
B:ribosomes and vacuoles
C:nuclei and ribosomes
D:nuclei and mitochondria
Answer:
C
Explanation:
Protein synthesis occurs through a chain of processes.
1) transcription of DNA in nucleus to form a RNA strand
2) RNA then undergoes modifications to form a mRNA
3) mRNA then migrates out of nuclear pore and complexes with a small and large ribosomal subunit to form a translational complex
4) translation occurs at the ribosomes to form a polypeptide by joining correct amino acids together through the formation of peptide bonds
5) polypeptide gets modified chemically and folded physically to form a protein in rough endoplasmic recticulum and golgi body.
Protein synthesis is accomplished primarily by the interaction two cell structures namely; nuclei and ribosomes.
PROTEIN SYNTHESIS:
Protein synthesis is the series of process that involves how proteins are produced by genes. Protein synthesis takes place in two stages namely: transcription and translation.TRANSCRIPTION:
Genes are stored in the nucleus as DNA, hence, the process of synthesizing mRNA from DNA called transcription, takes place in the nucleus.TRANSLATION:
Translation is the process whereby mRNA is used to synthesize proteins in the ribosome. The mRNA, produced in the nucleus of a cell moves to the ribosome, which is the site of protein production. Therefore, protein synthesis is accomplished primarily by the interaction two cell structures namely; nuclei and ribosomes.Learn more at: https://brainly.com/question/241631?referrer=searchResults
If the input force on a pulley is 3 N and the output force is also 3 N, what is its
mechanical advantage?
A. O
B. 1
C. 3
D. 9
Answer:
B
Explanation:
Which of the following is the best definition of the term genotype?
A. An individual's expressed traits
B. The allele that is expressed over other alleles
C. A specific combination of versions of a gene
D. The allele that is expressed only in homozygous individuals
Answer:
C. A specific combination of versions of a gene
Explanation:
A genotype is made up of two versions of a gene, one from each parent. A phenotype is an individuals expressed traits.
The best definition of the term genotype C. A specific combination of versions of a gene.
What is genotype with example?An organism's genotype is its specific combination of alleles for a given gene. So, for example, in the pea plants above, the possible genotypes for the flower-color gene were red-red, red-white, and white-white.
What is phenotype?Phenotype Definition
Phenotype is a description physical characteristics. It includes both visible traits (like hair or eye color) and your measurable traits (like height or weight). Phenotype also refers to characteristics related to development and behavior, like elements of your personality.
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What supplies energy for the water cycle?
Answer:
The sun!
Explanation:
Brainliest plss
Answer:
The sun is what makes the water cycle work. The sun provides what almost everything on Earth needs to go—energy, or heat. Heat causes liquid and frozen water to evaporate into water vapor gas, which rises high in the sky to form clouds... clouds that move over the globe and drop rain and snow.
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Explanation:
For the following questions, refer to the following passage and illustration.
A team of scientists is studying the composition of the sea floor near the underwater mid- Atlantic ridge volcanoes. They noticed that the ocean floor had regular alternating magnetic bands on either side of the ridge. Their observations are shown in the diagram. This effect is related to regular polarity reversals in the north and south magnetic poles of Earth.
With the understanding that solid land masses float on the liquid mantle, the scientists have concluded that the addition of new ocean floor at the mid-Atlantic ridge is the result of
a
seafloor spreading.
b
subduction.
c
earthquakes.
d
mountains.
Answer:
b
Explanation:
thats the right answer
Consider the formula for glucose: C6H1206. What does this indicate about the relationship of the reactants to glucose?
OTwelve water (H2O) molecules were used to make it.
O Twelve hydrogen (H2) molecules were used to make it.
O Six oxygen (O2) molecules were used to make it.
O Six carbon dioxide (CO2) molecules were used to make it.
Answer:
Six carbon dioxide (CO2) molecules were used to make it.
Explanation:
How has population growth led to overpopulation and over-
consumption? Provide two examples from the text to support
your answer.
Answer:
If we fail to bring population growth and over-consumption under control — the number of people on Earth is expected to grow from 6.5 billion today to 9 billion by the second half of the 21st century — then we will inhabit a planet where life becomes increasingly untenable because of two looming crises: global heating, and the degradation of the natural systems on which we all depend.
Explanation: hope this helps
How do bacteria cause disease?
Answer:
I believe it is caused by certain mutations of the different things that are in the bacteria.
Explanation:
I Just answered a question just like that.
PLEASE HELP 25 POINTS USED FOR THIS QUESTION! give the name for the material that will fit into the secondary or regulatory site of an allosteric enzyme.
Answer:
The allosteric site is a site that allows molecules to either activate or inhibit (or turn off) enzyme activity. It's different than the active site on an enzyme, where substrates bind
Explanation:
"G1 or "Gap 1" phase is also commonly referred to as the
phase.
a) Gathering
b) Growth
c) Grouping
d) Gearing up
The group of polar bears that live along the eastern coast of Russiam
3
an organism.
a community.
an ecosystem.
a population.
Answer:
population
Explanation:
quizlet!
Answer:
The answer is D, a population.
Explanation:
Elements and Compounds
please help me
Answer:
Question 1:
An element is a pure substance which cannot be broken down by chemical means.
Question 2:
A molecule is a group or cluster of two or more atoms held together by chemical bonds. A compound is a substance or material which is formed by two or more different types of elements which are combined chemically in a fixed proportion.
Question 3:
Electrons, Protons and Neutrons
Question 4:
Dmitri Mendeleev in 1869 developed the periodic table.
Answer:
An element is a substance that cannot be broken down into any other substance. made up or consisting of several parts or elements
Explanation:
How does the change in estrogen (estradiol) levels correspond to the uterine (endometrial) thickness on days 5-14?
Fiona and her friends were watching a TV show about organisms found in the subtropical forests of southern China. These organisms were acid tolerant and lacked most internal organelles. Which organisms could they most likely be?
A.
amoeba
B.
archaea
C.
dinoflagellates
D.
algae
E.
euglenoids
Answer:
B. archaea
answer for plato/edmentum
list 3 negative impacts that overpopulation can have on a population!!
1 Point
Which of the following is a pyrimidine base in DNA?
A. Guanine
B. Purine
C. Adenine
O D. Thymine
Answer:
Its thymine :)
Explanation:
The heart is made mostly of:
vascular tissue
nervous tissue
muscular tissue
connective tissue
Answer:
Muscle Tissue
Cell Division and the Cell Cycle, can anyone write me a essay that is three paragraphs long on that topic. I stink at it
answer:
The cell cycle is a cycle of stages that cells pass through to allow them to divide and produce new cells. It is sometimes referred to as the “cell division cycle” for that reason. ... The two main parts of the cell cycle are mitosis and interphase.
The cell cycle is the replication and reproduction of cells, whether in eukaryotes or prokaryotes. It is important to organisms in different ways, but overall it allows them to survive. For prokaryotes, the cell cycle, called Binary Fission, allows for them to live on by dividing into two new daughter cells.cell division takes place in the cell cycle.
Cell division is the process by which a parent cell divides into two or more daughter cells. Cell division usually occurs as part of a larger cell cycle. ... Prokaryotes (bacteria) undergo a vegetative cell division known as binary fission, where their genetic material is segregated equally into two daughter cells.
Purpose of Cell Division. Cell division is an essential process for organism creation, growth, and repair. There are two main types of cell division in humans. Cells can divide to make reproductive cells, sperm and eggs.
The cells in our body are highly intelligent. They know when to duplicate themselves and when to rest or stop dividing altogether. ... If the cell passes through each phase and makes it through each checkpoint, then the parent cell replicates and each of the new cells then enter into their first cell cycle.the cell cycle and cell division is very benificial and important for our body.
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