Which activity has had the most negative effect on the environment

How many organisms have ever lived on Earth?

How can adult sponges colonize other areas?

Which process produces offspring that are better able to cope with changes in the environment? Mitosis Cell division Asexual reproduction Sexual reproduction

What happens to energy as it flows through a food web?

What advantages are given to animals and plants by asexual reproduction?

In humans, normal color vision is dominant over colorblindness. A colorblind male marries a female who is a carrier for color blindness. What is the probability that a colorblind child would be born to these parents?

What is the dependent variable? Also what is the Testing Variable.

Statistics about the climate in a tundra ecosystem were collected for 30 years. which hypothesis about a population of caribou could be made based on the climate data collected? a. caribou calf survival is directly related to annual rainfall amounts.

Since plant cells do not have centrioles, how do they make spindle fibers during mitosis?

Plants use sunlight to produce some ATP during photosynthesis. How do plants produce ATP when the Sun is not out? a. Plants are secondary consumers. b. Plants also use cellular respiration. c. Plants extract ATP from the stars. d.