Why is water a more hospitable environment for life than dry land?
a. gravity is not a problem in water
b. sperm can meet egg easily in water
c. osmotic balance is not a problem in water
d. oxygen is more available in water
e. a and b are correct

With regard to enzymes, key is to lock as a) substrate is to activation energy eliminate b) product is to substrate. c) enzyme is to active site. d) substrate is to active site.

When a population split into two subgroups what is most likely to cause the subgroups to develop different traits?

Water changes bacteria in the soil converts this nutrient into a usable form. plants take up the usable nutrient through the soil and assimilate it into proteins, making it part of the plant. an animal eats the plants, and the nutrient becomes part of the animal. when the animal dies, it decomposes, returning the nutrient back to the soil. which cycle is being described? water cycle carbon cycle nitrogen cycle phosphorous cycle