Match each checkpoint with the action it checks for.

Answer:

Oxygen levels sharply declined about 400 million years ago. Oxygen levels stay above 15 percent starting 200 million years ago Oxygen levels remain below 5 percent starting 1000 million years ago. Oxygen levels raise significantly between 1000 and 700 million years ago.

Explanation:

Answer: Oxygen levels sharply declined about 400 million years ago

Explanation: corect answer

Answer:

Anti-infection opposition grows normally in microscopic organisms. Be that as it may, our activities can expand obstruction creating and spreading. This can occur:  

at the point when human and creature wellbeing experts over recommend anti-infection agents  

at the point when individuals don't accept anti-infection agents as coordinated  

because of poor cleanliness and an absence of disease avoidance and control for example not washing hands appropriately  

Answer:

Genotype: 50% Ff, 25% FF, 25% ff

Phenotype: 75% dark colored feathers, 25% light colored feathers

b. 21 with dark colored feather

c. 7 with light colored feathers

Answer:

All of the above

Explanation:

All those reason will keep you safe thats why i chose that answer

Pls mark me as brainliest if this helped!!

Answer

Ocean acidification results from the solubility of CO2 in oceans increasing the H+ concentrations, and depletion of bicarbonates concentrations.

Therefore, human activities which increases the concentration of CO2 in the atmosphere, will raise the atmospheric  CO2 concentration. CO2 is constantly being absorbed by green plants maintaining   its concentration through carbon cycle,Therefore massive deforestation  which removes green plants, cutting  down photosynthesis is one of human activities which  raises CO2 levels of the atmosphere.The CO2 dissolves in  the oceans to raise its acidic levels.Lower pH.

Another source is fossil fuels emissions which add more CO2 to the atmosphere.

Explanation:

Answer:

Only supplies a set amount of energy depending on distance from sun

Answer:

Animals,Bacteria,plants,fungi

Explanation:

The independent variable is  

✔ time .

The dependent variable is  

✔ texting speed .

Answer:

D: time

C: texting speed

Explanation:

edg2021

Answer:

CELL

Explanation:

THE CELL

Biochemistry is the study of the chemical processes occurring in living matter.

Answer:

es Parte de la química que estudia los elementos que forman parte de la naturaleza de los seres vivos.a

Explanation:

Answer:Respiration

Explanation:

Answer:

Returning carbon dioxide to the atmosphere

Explanation:

Carbon dioxide is released to the atmosphere through respiration by animals, plants and microorganisms.

Answer:

The length of DNA found in a cells nucleus is 3km. It is the equivalent distance of the Lincoln Memorial to the capital in Washington, DC.

Answer:6 feet long

Explanation:

Message me if I’m wrong

Answer:

Fuels with large hydrocarbon molecules are more viscous than fuels with small hydrocarbon molecules

Explanation:

Viscosity refers to runniness of a liquid. Fuels with large hydrocarbon molecules are more viscous as longer chains of large hydrocarbon molecules are easily entangled. Fuels with small hydrocarbon molecules are comparatively viscous as shorter chains of small hydrocarbon molecules are less likely to become entangled.

Answer:

Today most people in developed countries have a scarcity of food sources.

Answer:

it is the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.

Explanation:

plz mark brainliest

Answer:

The definition of photosynthesis is the process through which plants use water and carbon dioxide to create their food, grow and release excess oxygen into the air.

Answer:

The correct answer is - option A. mandible.

Explanation:

Mandible is the bone of jaw especially lower jaw. It is not a bone that protects any vital organ it just help to close and open mouth for essential mouth movements like eating and talking.

Sternum and Ribs are the bones that plays role in providing protection to vital organs such as heart and lungs. Vertebral column is the bone that protects spinal chord while providing stiffness to the body and back.

Thus, the correct answer is option A. mandible.

Answer:

tail n scaly skin..

Explanation:

The most common type of observed mutation is a neutral mutation. This mutation doesn't impact natural selection in any noticeable way since it doesn't impact the fit of that organism. Since neutral mutations convey no advantage, they generally must spread in a population through drift. Many also will disappear through drift.

Answer:

The most common type of observed mutation is a neutral mutation. This mutation doesn't impact natural selection in any noticeable way since it doesn't impact the fit of that organism. Since neutral mutations convey no advantage, they generally must spread in a population through drift. Many also will disappear through drift.

Explanation:

Answer:

I had a step stool with a shed in a web that looks exactly like this and my dad said it was a black widow shed so idk maybe you should look up black widow sheds because I can't find any.

Explanation:

Answer:

Theridiidae, also known as the tangle-web spiders, cobweb spiders and comb-footed spiders, ... T. grallator is known as the "happyface" spider, as certain morphs have a pattern uncannily resembling a smiley face or a grinning clown face on ...

Explanation:I just searched up the pic -_-

Answer:

Explanation:

It is water's chemical composition and physical attributes that make it such an excellent solvent. Water molecules have a polar arrangement of oxygen and hydrogen atoms—one side (hydrogen) has a positive electrical charge and the other side (oxygen) had a negative charge

Answer:

Uhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

sorry needed points

Answer:

Because of the number of organisms present.

Explanation:

It has been discovered that oil was formed through the accumulation and conversion processes that occurred to the remains of dead animals in the soil.

And since the west Virginia was covered by swamp in about 300 million years ago, it probed to having more animals than that of Wisconsin that was covered by rocks, therefore the possibility of having oils.

Answer and Explanation:

Example of a food-web:

(1) Algae --> (2) Protozoas --> (3) Krill --> (4) Cephallopods --> (5) Medium sized dolphin --> (6) Large Dolphin

The trophic web is the process of energy transference through a series of organisms, in which every organism feeds on the preceding one and becomes food for the next one.

1) The first link is an autotroph organism or producer, such as a vegetable, that can synthesize organic matter from inorganic matter. In this example, the autotroph organisms are algae, that make use of sunlight and inorganic matter.

The next links are the consumers:

2) Herbivores are primary consumers and feed on producers. In this example, herbivore organisms are protozoan.

3) Krills are the secondary consumers and feed on protozoans.

4) Some species of cephalopods feed on krill, among other species.

5) Specialized Cetaceans such as the Risso´s dolphin, feed especially on cephalopods, as they lack upper teeth and they only have a few teeth in their jaws.

6) The killer whale is a big sized-dolphin and a very important predator. It feeds on many animals, and one of them is the Risso´s dolphin.

Answer:

the food that they ate

Explanation:

The beaks of finches found on various Galápagos Islands differed based on the food that they ate. The finches that survived on eating different larger nuts had strong beaks for breaking the nuts open. While the Finches that ate smaller type nuts and seeds had beaks for cracking nuts and seeds. This also applied to other types of animals as well, each adapting to its own necessities.

Answer:

I suppose it would be the seed.

Plants can provide variety of products including fruits, vegetable, etc. Chilli is the part of stem of plant used as spice.

Different parts of plants work in co-ordination to perform various functions.

The basic parts of plants include:

Chilli that is used as spice is the stem part of plant.

Thus, the correct option is A.

For more information about plants, visit:

https://brainly.com/question/13976657

Explanation:

Cyclin is a family of proteins that controls the progression of a cell through the cell cycle by activating cyclin-dependent kinase (CDK) enzymes or group of enzymes required for synthesis of cell cycle.

Answer ...

Explanation:

Basically u will be not able to move .

Answer:

The correct answer is "The energy is transferred to ATP".

Explanation:

The missing information of this question is:

C6H1206 + 602 / 6CO2 + 6H2O + ATP

What happens to the energy in the bonds in glucose?

The energy is transferred to oxygen.

The energy is transferred to carbon dioxide.

The energy is transferred to water.

The energy is transferred to ATP.

The correct answer is "The energy is transferred to ATP".

During cellular respiration, the cell produces energy from the oxidation of glucose and it stores it in the form of adenosine triphosphate (ATP). The terminal phosphate group of ATP is highly energetic, and the cells breaks down ATP to use its energy in diverse chemical reactions. For this reason ATP is known as the "energy currency" or "coin of the cell".