The pulmonary veins are the only veins that carry what type of blood?

If a major environmental change were to occur, in which type of ecosystem would some organisms be most likely to survive?

Nuclear dna can be extracted from bones and teeth to determine personal identification. if, however, the nuclear dna is degraded or damaged, there is another substance which is more plentiful and durable that can be analyzed.

Which organ performs a dual function of ejaculation of sperm and void of urine 1-ejaculation ducts 2-cowpers gland 3-urethre 4-seminal vesicles

The fact that astronomers have observed billions of stars clustered together is evidence that - - A. stars must have some sort of attraction for each other. B. all sections of space have the same numbers of stars. C.

What are proteins used for in living things?

Explain how the carrying capacity affects the number of predators in an area biology regents?

Select all the correct answers. Which two statements are true for the leading strand in DNA?

Which example best explains the interaction of Earth's spheres when acid rain affects trees? The geosphere is interacting with the hydrosphere. The atmosphere is interacting with the hydrosphere.

the process in which the best adapted organisms survive and pass on their traits, while those that are not well adapted do not survive to pass on their traits

The seed color of the garden pea was used to derive Mendel's two laws: segregation and independent assortment. Now, we know that the Y allele codes for the enzyme converting green to yellow chlorophyll.