Q; beta radiation a; 1.is the same as alpha radiation and does not have electrons. 2.is different from alpha radiation and does have electrons. 3.is the strongest form of radiation. 4.is different from alpha radiation and does have a helium nucleus.

In dna, only the_ varies from one nucleotide to another. base phosphate sugar amino acid

The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. the ancient whale is extinct and is believed to be an ancestor of the present-day whale. what do these skulls most likely show that supports darwin’s theory of evolution? all populations can adapt and survive. only some organisms have a common ancestor. populations change slowly over time. populations rapidly become extinct.

Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .