Another name for the unicellular organisms that dominated the earth up to the precambrian time is

a. prokaryotes.

b. eukaryotes.

c. cyanobacteria.

d. ediacaran.

Which country has the largest population of feral camels?

Which accurately describes the relationship between cancer risk and exposure to mutagens?

How do waterfalls form? A. meander gets cut off. B. Sediment builds up. C. Soft rock erodes. D. Flat areas flood.

Scientists are researching a large family, many of whose members have Jackson-Weiss Syndrome, a disease that causes bone problems. The scientists noticed that every person with Jackson-Weiss Syndrome had a parent who also had the disease.

What human cell leaves the cell cycle temporarily

Factors like lack of variation and environmental changes can cause a species to fail to survive. This is known as A. conservation. B. evolution. C. extinction. D. mutation.

What are the specialized parts of the phospholipid bilayer, and how do their structures relate to the structure of the plasma membrane?

2. Which statement about cellular respiration is correct? A The process of cellular respiration breaks sugar into simple oxygen and water B The reactants of cellular respiration are glucose and oxygen molecules C The major product of cellular

In which stage of meiosis does the separation of homologous chromosomes occur?

Where was lower egypt located