State two different characteristics that distinguish autotrophs from heterotrophs.

Scientists decide the age of different rock layers by the things that they uncover in the rock. Which of the items below could scientists use to date a layer of rock? A. an insect flying near the dig site B. a fossilized fish C.

Which feature of the lung cell allows oxygen to pass through quickly? Choose one answer. A: It is thin B: It has a large nucleus C: It has many mitochondria

What is the form of a trait that seems to disappear in population

All BUT one is a function of the cell wall. That is

Which type of population is most likely to suffer death as a result of disease? a. a large population living in a large area b. a small population living in a large area c. a large population living in a small area d.

A deletion of one base in the original segment of DNA is called a frameshift nutation what will happen to the newly synthesized protein as a result

4. Is predation a density-dependent or density-independent factor?

Why do you think a fracture involving the bones of the nasal cavity could affect the cranial cavity?

Which structure in a cell makes protein

Do Genes make up chromosomes.