Review test questions
art 1 of 1 -
question 4 of 50
2 points
protists represent an important evolutionary step between
and
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a. plants, animals
b. bacteria, animals
c. single celled organisms, multicelled organisms
d. fungi, plants
reset selection

The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). if you breathe 15 times a minute (at rest), taking in and exhaling 0.5 l of air with each breath, what volume of air do you breathe each day? air is 21% oxygen by volume. what volume of oxygen do you breathe each day?

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.

How does photosynthesis show the conservation of mass and energy?