How were divisions of time separated when scientists created the geologic time scale?

by the thickness of rock strata

by the color of rock strata

by the fossils found in rock strata

by the location of rock strata

What is given much of the credit for the present periodic table?

Which part of the spermatozoa contains the most mitochondria? a. tail b. midpiece c. head d. acrosome?

Why does blood typing reduce the likelihood of tissue rejection in blood transfusion

N what organelle would you find acetyl coa formation, the citric acid cycle, and the electron transport chain?

What is a similarity between alcohol fermentation and aerobic respiration

What is the function of myeloma cells used in the production of monoclonal antibodies?

Describe a simple nervous system. Give an example of an organism that has a simple nervous system.

An example of a parallel choice on a dichotomous key is

Describe one way the human respiratory system degrades over our lifespans, and explain one environmental condition that could cause an unnatural degradation as someone ages, including why that environmental condition harms their respiratory system.

Which is the mechanism by which improper excision of a prophage from a bacterial chromosome results in packaging of bacterial genes near the integration site into a phage head?