Stem cells from human embryos are used to treat some diseases in humans. Explain why.

Which of the following does not influence the time necessary for a nerve impulse to be transmitted? A) length of the axonB) presence or absence of a myelin sheathC) diameter of the axonD) presence or absence of nodesE) whether or not the impulse

What is siliceous ooze mostly composed of? A) minerals that crystallize quickly from ocean water through various chemical reactions B) the shells of diatoms (single-celled algae) and radiolarians (single-celled animals) C) mineral grains that were

Which fish has a skeleton made of bone?

What would you hypothesize about changes in albedo as a result of the loss of mosses and lichen and gain in cyanobacteria?

What is epinephrine and what function does it have?

How are fingerprints discovered at crimes?

Do plants such as ferns need to break down glucose to obtain usable energy? A. No, they absorb the sun's energy directly. B. No, they absorb energy from the soil. C. Yes, they make glucose and break it down to produce ATP. D.

Which carbon (s) on the sugar is (are) in dna is used to make the phosphate ester linkages? g?

Which of the following is not a means of water erosion? A. Streams B. Rivers C. Natural springs D. Ocean waves

What are the eight levels of classification from most general to most definite