Rheumatoid arthritis is caused by:

a bacteria

a virus

a reaction to an immunization

an autoimmune reaction

Genes do not exert the only influence on personality. therefore,:

A journalist on a news show states that most insect repellents can harm the nervous system of infants. Should you consider the journalist's statement to be a scientific fact? A. Yes, it makes sense that insect repellents could harm babies. B.

How is a biosphere different from other spheres (Geo-, Hydro-, Atmo-) ?

What is relative dating? O A. A method of determining the age of a rock layer by comparing its position to other rock layers B. A method of determining the age of a rock layer based on the amount of radioactive material that remains in the rock C.

Which of the following lists the steps of technological development in the correct order, from first to most recent? A. (1) Telephone; (2) cordless telephone; (3) telegraph; (4) mobile phone B.

Relative to rainfall, the tundra is most like what other biome

Which artery is felt when taking the pulse at the wrist?

How does skin prevent entry of micro organism in the body

Hank likes to explore nearby streams during the summer. However, one winter there is a lot of rain near the stream. How might the stream change before the next summer? A. The stream will have dried up. B. The stream water will be shallower. C.

A woman with rheumatoid arthritis has taken leflunomide for 1 year. she telephones a nurse and says that the result of a home pregnancy test was positive. the nurse should: