How are organisms grouped in an ecosystem?

a. by their movement

b. by how they get their energy

c. by how they migrate

d. by how they produce

Any answers are appreciated. In science, what are the characteristics of a stable society?

The part of the eye that allows for varying amounts of light onto the retina is the

Identify the role of each organism in the food chain

Fructose is a molecule that can move across the cell membrane. if the concentration of fructose is higher outside the cell than inside the cell, then what will happen by the process of diffusion?

Tyrell is doing an experiment to find out which evaporates faster-water, liquid soap, or apple juice. To make sure Tyrell's experiment is a fair test, he should

Which list describes the path carbon dioxide takes to the nose?

What is being divided and equally distributed

Which of these groups of mammals is defined by having multicusped lower molars and a narrow pelvis? a. allotheria b. prototheria c. theria d. metatheria e. eutheria

Advantages and disadvantages of amniocentesis

Physical properties are those that an object or trace evidence has with just its physical existence, without altering it in any way with chemicals.