A nocturnal animal waking up when the sun goes down is an example of which characteristic of living thing?
A. Respond to stimuli
B. Are made of cells
C. Grow and develop
D. Obtain and use resources for energy

An organism has the following traits multicellular cant photosynthesize has a skull. wht kingdom does this organism most likely belong too?

Select the correct answer. which term do biologists use to describe the average number of individuals of a species per unit area? a. carrying capacity b. population density c. minimal viable population d. survivability curve

What would happen if the krill were removed from the food web