Starting billions of years ago, algae lowered the

atmosphere.

levels in the

A. oxygen

B. ozone

C. carbon dioxide

D. methane

Lymphatic tissue contains a large number of lymphocytes distributed in a specialized form of ___.

A male fruit fly has three pairs of autosomes as well as an X and a Y chromosome. None of the chromosomes undergoes crossing-over. What fraction of an individual male's gametes will contain only the chromosomes that it inherited from its mother?

What effects would you expect uncontrolled celiac disease to have on children?

What best describes a role of animals in the water cycle

Why is the habitable zone important for Exoplanets?

Based on the data collected the highest rising bread would use yeast warm water and the addition

Explain how organisms contribute to fossil fuels.

Organisms that break down complex compounds and dead tissue are

Which is an example of dehydration synthesis? A.) DNA synthesis from nucleotides B.) conversion of proteins into its amino acids C.) conversion of lipids into fatty acids

Making chemical energy from light energy is called cellular respiration. True or false