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Anna35 [415]
1 year ago
5

A swim team thinks that the swimsuits and swim caps they use may affect the team's performance. The swim team decides to test if

the swimsuits make a difference on how fast they can swim. They split the team in two groups. The two groups wear different kinds of swimsuits and different kinds of swim caps.
Why is their test invalid?


A.The swim team didn't have enough members.
B.They should have changed one variable, keeping the other the same.
C.They all swam different speeds on purpose.
D.Actually, the test is valid.
Biology
2 answers:
d1i1m1o1n [39]1 year ago
5 0
The answer is A ……………
densk [106]1 year ago
3 0

Answer:

A

Explanation:

They need a control group

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What conclusions can we draw from the lab about photosynthesis and cellular
GuDViN [60]

Answer:

Carbon dioxide and oxygen are recycled through photosynthesis and cellular

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Explanation:

Photosynthesis and cellular respiration are two distinct and opposite metabolical processes undergone by living cells. They are opposite processes because one utilizes the products of the other as reactants.

Photosynthesis is a unique process to autotrophic organisms like plants. It is the process whereby plants synthesize their food in form of organic molecules (glucose) by combining Carbondioxide (CO2) and water (H2O) in the presence of sunlight.

The overall equation of photosynthesis is as follows:

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On the other hand, cellular respiration is the process whereby living cells obtain energy (ATP) by breaking down food molecules (glucose) using oxygen to produce carbondioxide (CO2) and water as products. The overall equation is:

C6H12O6 + 602 -----> 6CO2 + 6H2O

Based on the lab experiments, it can be concluded that Carbon dioxide and oxygen are recycled through photosynthesis and cellular

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Option B is incorrect because light energy from the sun powers photosynthesis while option C is incorrect because photosynthesis transforms light energy to chemical energy while cellular respiration transforms chemical energy to thermal energy.

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