Which of the following is true about facilitated diffusion? Particles are usually too large (or have another characteristic) to pass directly through the cell membrane.

It is a passive process.

Particles have a net movement from low concentration to high concentration.

The particles pass use protein channels to pass through the cell membrane.

An ecologist is studying the effects that a population of predators is having on a population of a prey. he used data from the field to produce this graph. which conclusion can draw from the graph?

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.

Which organism actively hunts other