Which of the following is the cause for different seasons on earth?

A. The direction earth spins around it's axis

B. Changing levels of gas compositions throughput the year

C. The distance from earth to the sun

D. The way earth has a tilted axis

The term facultative anaerobe refers to an organism that A) Doesn't use oxygen but tolerates it. B) Is killed by oxygen. C) Uses oxygen or grows without oxygen. D) Requires less oxygen than is present in air. E) Prefers to grow without oxygen.

Explain how the carbon, oxygen, and nitrogen cycles are similar.

After crossing purebred red (dominant) and purebred white (recessive) flowers, pink flowers appeared. Using symbols, show the cross between pink and white flowers.

If the inner membrane of mitochondria was not folded, how would it affect the organism? A. It would have less energy due to a smaller area for cellular respiration to take place. B.

Which natural agent of erosion is mainly responsible for the formation of the barrier islands along the southern coast of long island?

Which of the following codes for a specific protein? Question 1 options: DNA gene enzyme chromosome

Any problem of inquiry can be proved or disproved using the scientific method. True False

What was the first living cells to evolve on earth?

Natural lakes are formed by erosion. ALL BUT one of these is a type of erosion that forms lakes. A) glaciers. B) gravity. C) rivers. D) wind.

If one mole each of CH4, NH3, H2S, and CO2 is added to 1 liter of water in a flask (1 liter of water = 55.