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vesna_86 [32]
3 years ago
12

Fiona wants to use the scientific method to answer the question "Do oxygen levels in the air of photosynthesis?" She reads about

photosynthesis in her biology book and is ready to carry the next step. should she do next? O perform an experiment design a procedure make observations a hypothesis
Biology
1 answer:
Stella [2.4K]3 years ago
5 0

Answer: hypothesis, prediction, design experiment, carry out experiment, etc

Explanation:If the question is supposed to be, is there a connection between atmospheric oxygen level and photosynthesis, then the next step would be to frame the hypothesis, which could be, for example,

“photosynthesis requires oxygen”,  and a prediction such as,,

in a closed system, photosynthesis will reduce the oxygen level, or even photosynthesis does not proceed without oxygen.

and a format to test the hypothesis (design an experiment)

perform the experiment

collect data

analyse data

(of course, in this case, the data will support the null hypothesis).

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In the heart, the valves are located between atria and ventricles and between ventricles and arteries (option D).

<h3>What are valves in the heart?</h3>

Valves are membranous partitions which permit the passage of the contents of a vessel or cavity in one direction, but stop or control the flow in the opposite direction.

Valves in the heart enforce a one-way blood flow through the heart and separate atria from ventricles, and ventricles from the large arteries that leave them.

The four valves in the heart and their location is as follows:

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The valves between the atria and ventricles are called atrioventricular valves or cuspid valves while those at the bases of the large vessels leaving the ventricles are called semilunar valves.

Therefore, it can be said that the valves of the heart are located between atria and ventricles and between ventricles and arteries.

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5 0
1 year ago
Define population. How is a population different from a community
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