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AlladinOne [14]
3 years ago
5

2) Oxygen constantly diffuses from air or water into a animal's bloodstream. For this to happen, the concentration of oxygen in

the blood must be
a. greater than the concentration of oxygen in the air or water.
b. greater than the concentration of carbon dioxide in the air or water.
c. lower than the concentration of oxygen in the air of water.
d. lower than the concentration of carbon dioxide in the air or water
Biology
1 answer:
PSYCHO15rus [73]3 years ago
3 0
I have the answers to this quick check if anyone needs help DM me.
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6 0
4 years ago
Which of the following do mosses and ferns have in common? Check all that apply:
joja [24]

Answer:

Sporophyte generation; gametophyte generation; sperm cells are transported  by water to egg cells; spore are transported by air.

Explanation:

> Both ferns and mosses have gametophyte generation followed by sporophyte generation.

> Both are spore bearing and the spores are transported by air.

> The sperm finds the egg cell by chemotaxis and require water for movement.

> They require moisture to thrive.

6 0
3 years ago
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a cactus with long spines protects itself from animals better that a cactus with short spines. according to natural selection, _
padilas [110]

It's very likely that the catcus with short spines will die out faster than the cactus with long spines.

6 0
3 years ago
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Compare and contrast two of the cycles of matter
Akimi4 [234]
The two cycles of the matter are the carbon and nitrogen cycle. Both of them are biogeochemical cycles, it means that the chemicals spend a portion of the cycle in living things and non-living things. They are also common in that they both recycle nutrients that are essential to all organisms. 

They are different in the manner that they cycle. Nitrogen is huge, 78% of the air around us is nitrogen. It cannot be used by plants or animals. Once the nitrogen is used by the plant and make its way to the animal, it can be released to decomposition. 

Carbon has no requirement in processing by bacteria prior to plants and animals being able to use. Plants take carbon dioxide and make it sugar, animals eat the sugar. Some of it is released carbon dioxide that we exhale.

6 0
3 years ago
Plate Boundaries and Movement lab report Directions Now that the lab is complete, it is time to write your lab report. The purpo
Paladinen [302]

Answer: 1.) You want to answer, possibly, your hypothesis.

2.) If you have a prompt and a claim, write your hypothesis down in this form: If ______________, then________________.

3.) Use the scientific process of performing an experiment, like observation, measurement, etc.

4.) LABEL all the sides of your (bar, line, etc) graph.

5.) Write a sentence using your graph in this form:

It (increased/decreased)_________ because _________.

This value is the (greatest/least) __________ because ___________.

6.) Explain why or why not the hypothesis supported your observations and measurements.

My hypothesis (did/didn't) support my experiment because ____________.

7.) In other words, how does your graph, observations, etc., go along with your hypothesis?

Hope this helps.

3 0
3 years ago
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