Scientists initially believed that viruses were alive because they contained a nucleic acid and they behaved like

Crossing over normally takes place during which processes?

Both animals and plants require energy to perform their daily life functions. Animals generally consume food and drink water through their mouths to gain energy. Which plant structure most similarly serves the function of a mouth

The fatty acids in the tail of a phospholipid molecule are?

Is oxygen an biotic or abiotic factor?

Why do the number of subatomic particles determines the properties/characteristics of an element?

Finish this sentence: most new species arise from a common ancestor one ... A) mutations randomly occur. B) populations of the original species suddenly become isolated from each other. C) natural selection does not occur.

which kind of tissue is designed to regulate temperature, secrete lubricants and protect the body from harmful substances

Which of the following examples can cause gene flow between populations?

Predict: logging removes vegetation that anchors soil and prevents erosion. how do you think logging will affect a coral reef? explain.

Describe how an amoeba feeds