Rheumatoid arthritis is caused by:

a bacteria

a virus

a reaction to an immunization

an autoimmune reaction

Which characteristic of potassium makes it useful for dating rocks? It has a long half-life. It decays at an unknown rate. It produces lead as it breaks down. It can be used to date all types of rock.

Which environmental factor could lead to a decrease in genetic variation in a population of tuna? an increase in food availability an increase in pollution a decrease in tuna fishing a decrease in tuna predators

What is an acidic hydrogen

Symbiotic relationship between Plasmodium and human host

You are part of a team of doctors doing a Phase 2 study of teixobactin on humans. Assuming protocol had not changed since the mice study, how are you administering the drug? a) through a nasal spray b) rectally c) orally d) by injection

Genetic disorders can result when sister chromatids fail to separate properly. During which phase is this problem most likely to occur? A: g1 phase B:g0 phase C: Cytokinesis D:Mitosis

4. Which change describes a demographic transition? a. a population moves from a high birthrate and death rate to a high birthrate and low death rate b. a population moves from a high birthrate and low death rate to a low birthrate and death rate c.

Changes in genes within a kind do not form a different kind. true or false

This is the energy that comes to Earth from the sun.

If we increase our food intake, we generally gain weight. nutrition scientists can calculate the amount of weight gain that would be associated with a given increase in calories.