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Arisa [49]
3 years ago
15

Chemical messengers that are produced in one location in the body, released into the blood, and travel to other locations, where

they elicit responses
Biology
1 answer:
Nimfa-mama [501]3 years ago
5 0
I don't know weekend to
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Scientists are studying a mangrove community in coastal Florida. They find three species of mangrove trees: red mangroves, black
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<span>a. What is one adaptation of a mangrove tree species that allows it to survive in its environment? 

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Which of the following statements best explains why evolution by natural selection is considered a theory and not a hypothesis?
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Natural selection provides the outline of an explanatory theory." Biologists consider it to be a scientific fact that evolution has occurred in that modern organisms differ from past forms, and evolution is still occurring with discernible differences between organisms and their descendants.

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Which was the original source of atmospheric oxygen? Question 4 options: autotrophs cooling of Earth’s crust formation of the oc
Nuetrik [128]

Answer:

The answer is autotrophs

Explanation:

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3 years ago
The second stage of the calvin cycle needs an input of energy to reduce the 3pg molecules that resulted from the first stage. wh
Colt1911 [192]
<h3><u>Answer;</u></h3>

ATP and NADPH that were supplied through the light reactions

<h3><u>Explanation</u>;</h3>
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  • The Calvin cycle is divided into three portions: CO2 fixation, CO2 reduction, and regeneration of RuBP. Because five G3P are needed to re-form three RuBP, it takes three turns of the cycle to have a net gain of one G3P. Two G3P molecules are needed to form glucose.

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Muscle fibers in the _____ enable it to increase or decrease the diameter of the pupil to allow more or less light to enter the
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iris

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