How many individual strands is dna composed of? 1 strand 2 strands 3 strands 4 strands?

What treats the body using principles similar to acupuncture and acupressure?

Diagrams, tables, and graphs are used by scientists mainly to A. design a research plan for an experiment B. test a hypothesis C. organize data D. predict the independent variable

A population of tree frogs lives in a forest. A river runs through the middle of the forest. A particularly snowy winter is followed by an unusually rainy spring.

Long-term exposure to stress can damage the cardiovascular system by causing A) excessive electrical activity in heart muscle. B) sudden, dangerous increases in the heart rate. C) heart valve malfunction. D) chronic high blood pressure.

What can be said about prokaryotes and eukaroytes? a. Prokaryotes always have a nucleus, but eukaryotes don't. b. Both of these cell types contain a nucleus. c. Eukaryotes always have a cell membrane, but prokaryotes don't. d.

Which of these phases of mitosis takes place first?

1) which color has the longest wavelength? A - red B - blue C - green D - orange 2) gamma rays, X-rays, visible light, and radio waves are all types of ___.

2) Which Sex Chromosome contains more Sex - linked traits and WHY?

Write the reaction for aerobic cellular respiration

Describe three approaches used to slow down the rate of extinction