How do plants obtain nitrogen?

A. They remove it from the air.

B. They absorb it through their roots.

C. They fix it in their leaves.

D. They produce it in their stems.

Why does biomagnification has a larger impact on organisms at the top of the food chain.

How did the medium ground finch population on Daphne Major change following the 1977 drought?

What is a cell that has a nucleus surrounded by a membrane and many other specialized organelles?

Are microscopic organisms called phytoplankton.

What factor will most likely determine where a wave current project can be located

What does the electrochemical communication do in the body?

The insertion of the human insulin gene into the bacterium Escherichia coli allowed it to produce human insulin. Which type of organism is E. coli?

When do introduced species become invasive?

If arthropods' appendages were not jointed, how would that affect them?

A student decides to set up an experiment to see if detergent affects the growth of seeds. he sets up 10 seed pots. 5 of the seed pots will receive a small amount of detergent in the soil and will be placed in the sun.