What did the presence of photosynthetic prokaryotes allow

A. more oxygen to enter the atmosphere

B. more water to enter the atmosphere

C. more sunlight to enter the atmosphere

D. more hydrogen to enter the atmosphere

Compare and contrast the processes of photosynthesis and cellular respiration Atleast two similarities and two differences between the two

How is the earth system organized?

What is a fracture in the crust called when land moves up, down, or sideways?

What type of tissue comprises the bulk of the myocardium

What determines whether a neuron is unipolar, bipolar, or multipolar? Draw an example of each.

A population is growing at a rate of 2,4,8, 16, 32. Which type of growth does this describe?

Which epithelial tissue type is most often found lining large ducts, such as those of the salivary glands or pancreas?

Evolution led to certain fishes, such as lung fishes to adapt to terrestrial mode of life. These fishes were the ancestors of modern amphibians. Which evolutionary mechanism is represented by this example?

As part of a science experiment, Jose did a test for starch on a slice of apple and a slice of potato. The yellow-orange iodine solution stayed the same color when it was put on the apple, but it became black on the potato.

What's the difference between transgression and marine regression