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12345 [234]
3 years ago
8

Scientists believe _______ were the first types of cells able to make their own food.

Biology
2 answers:
timama [110]3 years ago
6 0
Chemoautotrophs

Scientists believe CHEMOAUTOTROPHS were the first types of cells able to make their own food.

Chemoautotrophs are organisms that use inorganic energy sources for food, then it creates it own organic compound using ATP. The are primary producers in hostile environments like sea vents where they usually live.
Delvig [45]3 years ago
3 0

Answer:

Scientists believe  chemoautotrophs  were the first types of cells able to make their own food.

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Mars2501 [29]

Answer:

If there are options for this question, I couldn't find them online but I can tell you that one statement that describes the evolution of these species is that each of them shared an ancient ancestor.

Explanation:

The ancient common ancestor that these species share is that animal, in this case, from which all species descend.

It is the only species of living being that has evolved over the years and its original traits have varied, which led to the creation of all these species. That is why some of those traits will still be shared by them, while others, due to evolution, will not.

That is why we could say that these animals belong "to the same family" since they all come from the same ancestor.

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3 years ago
Which of the following describes an interaction between the endocrine system and the excretory system?
blondinia [14]
The answer would be c. This is because hormones are apart of the endocrine system and dispose of extra salt in the body. Helping with urinating is part of the excretory system.

Hope this helps :)
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3 years ago
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IceJOKER [234]

Answer:

. Immune system functioning decreases slightly during the first stage, increases during the , second, and then decreases more significantly during the third stage.

Explanation:

At the initial stage the body system is in shock, there will be fear especially in the case of sudden occurrence or happening this will makes

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but after a while there will be a response, in case of fear an hormone is released called cortisol to calm such an individual and give a balance to the system this will then increase the function of the immune system but when fear an anxiety gets to a peak and the immune system couldn't response such as individual could collapse leading to a relapse in the immune system and a decrease in function.

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