In the disease osteoporosis there is a significant loss of spongy bone. explain how the loss of this specific bone material can weaken a bone.

Would the seeds of the rye grass more likely be spread by wind or by insects? Give your reasons for your answer.

Why are alternative scientific theories to evolution not taught in public school? a. more theories would confuse students b. there are no viable scientific alternatives c. it is against the law d.

Explain how the abiotic components in each area determined what type of plants and animals lived there.

DNA and RNA are alike in that they

Tornadoes are most likely to be produced from which type of cloud

Which statement is correct about the total mass of glucose and oxygen formed during photosynthesis? It is equal to the total mass of carbon dioxide used. It is less than the total mass of carbon dioxide used.

If George is startled by a loud noise immediately after his baby sister cries, he is likely to become fearful every time she cries.

When the believer confesses his, he is cleansed by the blood of?

How does a vascular plant's phloem differ from its xylem? A. Phloem is found only in the leaves. B. Only phloem transports water. c. Only water flows through phloem. D. Phloem has a two-way flow of materials,

Many mutations have been identified in the lac operon. A particular mutation prevents the repressor protein from binding to the operator under all circumstances.