Which of the following units is likely to be used while calculating the distance between two galaxies?

Kilometers per hour

Light years

Miles per second

Weeks

How might an ecologist test whether a species is occupying its realized or its fundamental niche?

Which these organelles synthesizes lipids and carbohydrates?

Explain how plant life is benefited when microorganisms release carbon dioxide into the soil.

Why is the carbon cycle important to plants

While working in the chemistry lab, Matthew accidently spilled acid on the lab table. What should his first step be? A) Matthew should use the eyewash. B) Matthew should inform the teacher about the spill.

Why might it be important to use different models at different stages of an investigation.

Which of the following wave properties would be the best way to measure the height of a wave?

Would evolution by natural selection be able to happen if there was NO differential survival and reproduction within a species? Why or why not?

Air pollution is caused by A. natural events and human activities. B. human activities but not natural events. C. heavy rainfall. D. the sun.

Which of the following can increase the growth of algae when it enters streams? A) insecticide B) herbicide C) carbon dioxide D) oil