did Scientists used major changes in life forms in the fossil record to form the geologic time scale.

John decided to move from agriculture to the manufacturing sector. He abandoned his farm and shifted to a city. After a few years, when John visited his farm, he found the land covered with goose grass.

Occurs when all forces acting on an object cancel out, and there is no movement

Which of the following is not a symptom of desertification?

Which of the following is an example of an abiotic factor? A. A wind factor B. A bacterium C. A human D. A duck

What is responsible for gene regulation?

How does mccandless compared with the other wanderers?

If an individual inherits two of the same alleles, either both recessive or both dominant for a particular trait, the inherited genotype is what

What aspects of abundance do population density and population size measure, respectively?

What's an example of a multicellular producer

Are microorganisms alive and do microorganisms affect humans