Why can black holes not be seen?

They have too much gravity for light to escape.

They are hidden in interstellar dust.

They exist only behind other stars.

Scientists don't know where to look for them.

What are three major classes of RNA found in the cell?

Population Genetics Describe: How is a population described in population genetics?

What is threatened by an increase in fungal diseases? check all that apply.

Why is it important to study biodiversity

What are the traits for life

Can energy be transferred from animal to animal

The more stomata the more water loss?

Why does it take a long time to develop a new variety of tomato? A. Changes in traits happen gradually, over many generations. B. Many plants resist change. C. Tomatoes cannot acquire new traits. D. A species cannot change over time.

Select the one true statement. Vacuoles store nutrients, water, and waste in animal cells. Plant cells can have chloroplasts but do not have a cell wall.

Using water more effectively A. Protects the environment B. Causes the loss of natural pollution filters C. Increases with contamination D. All of the above