Which two reasons do marine animals make sounds underwater?

a. to seek out mates b to imitate humans

c. to ward off predators

d. to create music

e. to attract prey

Why is the sickness caused by trypanasomes called African sleeping sickness?

The ozone layer protects living organisms on Earth by A. enhancing solar energy B. blocking solar ultraviolet (UV) radiation C. blocking solar infrared (IR) radiation D. preventing escape of water vapor

The small, thin bones located at the front inner wall of the orbits are the: A) nasal bones B) hyoid bones C) malar bones D) lacrimal bones

What are the body systems that glucose will travel through

A flood hit an area, destroying much of the surrounding ecosystem. One animal species survived the flood, but all of its competitors were eliminated.

How are microscopes advantageous to scientist? name two examples when a biologist (or other scientist) may use a microscope?

Some geneticists study the genes that control bone development to try to understand bone growth and find cures for diseases. How is this different from an orthopedist (a doctor who specializes in bones) ? A.

The individual whose name is associated with a natural experiment during an outbreak of cholera in london was

Anaerobic prokaryotes use to obtain energy. Archaea and eubacteria are prokaryotic in nature. One of the differentiating characteristics between them is that eubacteria have in their cell walls.

Which STI if left untreated leads to madness