Approximately how much of Earth's surface is covered by water?

30 percent

70 percent

40 percent

50 percent

Many plants such as orchids are grown by a technique called tissue culture. small pieces of plant tissue from a leaf, stem, or root of a mature plant are placed in a medium that contains the proper nutrients.

Gases are only found in the atmosphere. T or F

A protein deficiency resulting in swelling of the body tissue primarily in the feet, legs, and belly is called A. marasmus B. kwashiorkor C. ketosis D. rickets

What micromolecules are broken down in the stomatch?

Why is there no rock record of the Hadean period? A. Rocks only formed near subduction zones during this period. B. The lack of ozone prevented rock formation. C. Earth's temperature was too high for solid rocks to form. D.

2 parents both have the blood group A their child has blood group O. what is the best explanation for this pattern of inheritence

What is the result of digestion of starch in the pig?

Identify the structure where atp is produced.

What is the essence of philosophical ethics

Why does the energy decrease as the trophic level ...