Explain why humans can be at different trophic levels on different food chains, but they can never occupy the lowest trophic level.

Why is the distinction between a community and an ecosystem important to ecologists?

Denise was measuring the effect of temperature on the amount of dissolved oxygen that water can hold. She hypothesized that as water temperature increases, the amount of oxygen that is dissolved in water increases.

2. Which is the most common type of muscle in the body? smooth skeletal cardiac

What category of organisms can mate and produce fertile off spriing

Large particles are engulfed, then enclosed by the cell membrane in a process called?

After a newborn has skin-to-skin contact with the mother, the nurse places the newborn under a radiant warmer. which complication is the nurse attempting to prevent?

Marks: 1 the circulatory movement that occurs in a gas or fluid with areas of differing temperatures due to the variation of the density and the action of gravity is called:

there is 30 percent more what in earth's atmosphere today than there was before the start of the industrial revolution

Scientists say that conditions must be "just right" for a hurricane to start up. Which is the first step of "just right" in the development of a hurricane? A) Cool ocean water replaces warmer surface water.

What is another name for a tropical savanna?