Answer:
Plasma is the liquid portion of the blood. Blood cells like red blood cells float in the plasma. Also dissolved in the plasma are electrolytes, nutrients and vitamins (absorbed from the intestines or produced by the body), hormones, clotting factors, and proteins such as albumin and immunoglobulins (antibodies that fight infection).
Explanation:
Where is the on and off "switch" located for the neuron?
A. The axon
B. The synaptic gap
C. The dendrites
Answer:
B.
---------------------
The leeward side of a mountain receives far less rainfall than the windward side is what?
Much of airborne moisture falls as rain on the windward side of mountains. This often means that the land on the other side of the mountain (the leeward side) gets far less rain—an effect called a "rain shadow"--which often produces a desert.
list 3 negative impacts that overpopulation can have on a population!!
Question 1 (4 points)
True or False: Solar panels are the only way humans can capture energy from the sun
for use.
True
False
Answer:false
Explanation:because there are a lot of ways that you can get energy.
How did the Byzantine Empire help to shape the modern world?
Answer: The Byzantine Empire influenced many cultures, primarily due to its role in shaping Christian Orthodoxy.
Explanation:
Answer:
The modern-day Eastern Orthodox Church is the second largest Christian church in the world. In addition, Byzantine art from this period had a strong influence on the later painters of the Italian Renaissance.
Overall, the Byzantine empire has had a wide ranging influence over eastern and even western Mediterranean culture: modern Greece, the Orthodox Church, ancient Greek learning, Muslim and Slavic culture, and more.
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).
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.
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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.
Hair or fur provide the following- look at picture
Answer:
Hair and fur provides, insulation, protection, and camouflage
Explanation:
Hair and fur can blend in the environment depending what color it is. For example, a tiger blends into the forest with it's black stripes. They provide insulation as they keep in the heat. They also provide protection from the outside world and from predators as their fur/hair hides them.
Sebastian wants to make ball-and-stick models of the four macromolecules. He has colored balls for each of the elements in these molecules, including the following.
red: hydrogen
black: carbon
purple: oxygen
green: nitrogen
Which molecule could he make that consists of long chains of red and black colored balls?
Answer:
the answer is B lipids :)
hope it helps
Explanation:
Answer:
b
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:
Which of the following sentences uses spatial organization?
The sentence which uses the spatial organization is option B . Describing the directions and characteristics of the lands nearby is an example of spatial organization.
What is spatial organization ?When elements of an abiotic or biological group are placed in space in a non-random manner, spatial organization can be seen. After thousands of particles interact millions of times, abiotic patterns such as the ripple formations in sand dunes or the oscillating wave patterns are typical illustration for spatial organization.
Disagreement between nations, reading habit, etc. does not describe anything related to space and surroundings.
The description of a landscape and its surroundings are inter-related in many ways and can be taken as a group in that region. Hence, option B is correct. Here, the traveler describes the connection to each regional characteristics.
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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
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:
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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Ed is analyzing feedback mechanisms that maintain homeostasis in the human body. He follows the procedure that is listed below. (NOTE: Do not conduct this investigation at this time.)
I. Invite a healthy test subject to participate in the investigation.
II. Measure and record the pulse and breathing rate of the subject.
III. Have the test subject exercise vigorously for 1 minute, such as by running in place.
IV. Repeat Step 2.
Why is Step 3 useful for Ed's purpose for the investigation?
a Exercise causes an increase in the pH of blood and other body fluids.
b Exercise increases the body's demand for food and nutrients.
c Exercise has no effect on the body's demand for oxygen, food, and nutrients.
d Exercise increases the body's demand for oxygen.
Answer:
d. Exercise increases the body's demand for oxygen.
Explanation:
More oxygen is needed during exercise by the body as compared to normal condition because our body needs energy which is only generated in the process of cellular respiration. In cellular respiration, glucose molecule is broken down by mitochondria of the cell and energy is generated in the form of adenine tri phosphate (ATP) which is used for performing muscular activity. So that's why oxygen requirement is more during exercise.
Maritime polar air masses _____.
A. bring clear, cold, dry air to much of North America
B .are warm, humid air masses that form over oceans
C. bring hot, dry weather to the southern Great Plains
D .are cold, humid air masses that bring fog to the West Coast
Answer:
d.
Explanation:
Please answer the following questions about ecology ASAP I always give brainliests and really need help
Answer:
t
Explanation:
The halogens are the most reactive among all
Answer: among all the elements on periodic table
Explanation:
CARBON IS AN IMPORTANT ELEMENT FOR BIOLOGY BECAUSE
Answer:
D
Explanation:
Carbon is a basis for all life on earth
A food chain is illustrated below:
The arrows represented most likely indicate
A. Energy released from metabolism into the environment as heat
B. Oxygen released from metabolism produced by cellular respiration
C. The absorption of energy from the environment that has been created
D. The transport of glucose away from the organism through photosynthesis
Answer:
A. Energy released from metabolism into the environment as heat.
Explanation:
Hope it helped pls mark me brainliest
The arrows represented most likely indicate is Energy released from metabolism into the environment as heat.
What is the food chain?A food chain describes how energy and nutrients move through an ecosystem. At the basic level there are plants that produce the energy, then it moves up to higher-level organisms like herbivores. After that when carnivores eat the herbivores, energy is transferred from one to the other
Thus, option 'A' is correct.
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How do the human nervous system and endocrine system interact in
response to a stimulus?
O
A. The endocrine system signals the nervous system to send out
nerve impulses in response to a stimulus.
B. The nervous system signals the endocrine system to release
hormones in response to a stimulus.
C. The nervous system responds to a stimulus, and the endocrine
system returns the body to a relaxed state.
D. The endocrine system responds to a stimulus, and the nervous
system returns the body to a relaxed state.
Answer: option B.
The nervous system signals the endocrine system to release
hormones in response to a stimulus.
Explanation:
The nervous system respond to stimulus through action potentials and neurotransmitters and they signals the endocrine system to secrete hormones.
The endocrine system is responsible for secreting hormones into the blood which is transported to the target cells. These hormones are responsible for metabolism , growth and response to stress. The hormones secreted provide feedback to the brain so as to affect neural processing.
Which symbol is used to label a male that expresses a sex-linked disorder on a pedigree? An empty circle. A half-filled circle. An empty square. A filled square.
A Filled square is used to label a male that expresses a sex-linked disorder on a pedigree. So, the correct option is D.
What is Pedigree chart?A pedigree chart is defined as the expression of phenotypic traits in the progenitor and the descendants of different generations in which the circle represents a female and the square represents a male.
If the whole figure is shaded or colored it means that the person is affected. In the parental generation, a single female mates with two males to produce the boy in the first generation, while the sex of the offspring is always dependent on the sperm cell containing the Y chromosome.
When an egg cell with a single X chromosome is fertilized with a sperm containing a Y chromosome it results in a male or if it binds to a sperm having an X chromosome it results in a female. Generally, there is a genetic cross between a male and a female. 50% result in either sex in the offspring.
Thus, a Filled square is used to label a male that expresses a sex-linked disorder on a pedigree. So, the correct option is D.
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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
What do the variables in the Hardy-Weinberg equation represent?
p
p2
q
q2
2pq
Answer:
p represents the frequency of the dominant allele (in decimal form) of a gene
q represents the frequency of the recessive allele (in decimal form) of a gene
These 2 alleles are different; one is dominant, one is recessive.
p^2 = the frequency of homozygous dominant individuals in the population (decimal form)
2pq = the frequency of heterozygous individuals in the population (decimal form)
q^2 = the frequency of homozygous recessive in the population (decimal form)
Where does the energy come from to make NADPH in the light reactions?
A. From the energy released by ATP molecules
B. From the energy stored in light
c. From the energy stored by the Calvin cycle
D. From the potential energy of ADP molecules
SUBMIT
Explanation:
Figure 19.2. The Light Reactions of Photosynthesis. Light is absorbed and the energy is used to drive electrons from water to generate NADPH and to drive protons across a membrane. These protons return through ATP synthase to make ATP.
Answer:
Explanation:
B. From the energy stored in light
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
Bacteria will not be found on fruits or vegetables.
True
False
Answer:
It's false, bacteria will be found
Explanation:
Answer:
i think its false because some of them have pores which allow bacteria to get in
Explanation:
How does the change in estrogen (estradiol) levels correspond to the uterine (endometrial) thickness on days 5-14?
If you exert 200 N of force to move a box 8 meters across the living room in 2
seconds, what is your power?
A. 80,000 W
OB. 400 W
C. 1600 W
O D. 800 W
SUBMIT
Answer:
800 W
Explanation:
Power is the rate at which work is done. That is, time taken to do a certain amount of work.
Mathematically, power = work done ÷ time taken
But work done = force × distance/displacement
Then work done = 200 N x 8 m = 1600 Nm = 1600 J (since 1 Nm = 1 J)
So power = 1600 J ÷ 2 s = 800 Js^(-1) = 800 W (since 1 Js^(-1) = 1 W).