Because cell membranes are selectively permeable they are capable of interacting with the outside environment. This interaction enables the cell to

Give a working definition of alien invasive species

What plays many roles in the body and determine many traits

A farmer was growing the peas seen here: round and yellow are dominant traits; green and wrinkled are recessive traits. The farmer's goal was to produce a crop of round, green peas.

A male stickleback fish will attack other male sticklebacks that invade its nesting territory. it will only attack male fish, which display the red belly characteristic of the species. why has natural selection favored this behavior?

Which of these statements describes one way that a nonrenewable energy resource is obtained? O A. Wave action moves underwater turbines. O B. Crude oil gushes upward in an oil rig. O CarWind turbines are placed on a coastline. O D.

One way mountains form is when the tectonic plates of the earth collide, causing the folding up of the earth's crust. There are other ways for mountains to form. Another way mountains may form is by

Investigators are looking into the sudden death of a popular celebrity's manager. They find DNA at the scene that does not belong to the victim. They take DNA samples of the celebrity and the rest of his staff to compare to the DNA from the scene.

Base your answer on the information below and on your knowledge of biology. Euglena are single-celled organisms that live in ponds. All euglena have chloroplasts and can make their own food. They can also take in food from the environment.

What happens to the host cell after it is infected by a virus?

What type of reproduction results in offspring that are genetically different from the parents