A student viewing a cell with a microscope observes a cell wall, a cell membrane, and a nucleus. the presence of these structures indicates that the student is looking at a cell of what animal?

Which elements are most abundant in living organisms?

A female fig wasp arrives at a fig to lay her eggs. when they hatch, they will mate with other wasps inside the fig. she observes that several other females have already laid eggs here.

The tendency of people to perform simple or well-learned tasks better when others are present is the original meaning of

Which of the following statements is false? Two or more atoms combine chemically to form a molecule. Two or more different substances combine physically to form a mixture. Two or more elements combine chemically to form a compound.

Nitrogen oxide is a A. primary pollutant B. secondary pollutant C. quaternary pollutant D. tertiary pollutant

What is the gel like substance in a plant and animal cell?

Which of the following best explains how much activities can directly contribute to landslides

Which best describes an organism niche

In about 90% of cases, Huntington's disease is inherited. But in 10% of cases, there is no evidence that a parent has the disease. Why do you think this is the case?

What is an alternitive energy source