Why is this process of moving molecules in and out of cells through a protein channel called "facilitated" diffusion?

What are the primary materials necessary for photosynthesis?

Which of the following is not a way materials pass through the cell membrane? osmosis active transport covalent motion diffusion

As the acidity of a solution increases, the pH will

Ocean surface currents circulate in clockwise direction in the Southern Hemisphere.

Which of the following is an example of homeostasis? During a time of high stress, Justin's heart races, his muscles tense, and he feels sweat dripping down his forehead. Sick with the flu, Alison's body temperature rises to fever levels.

Selective cutting leaves forests that are just like old growth forests. true or false

Organic compunds are important to all living things true or false

The measures that have already been taken to control water pollution globally

The ability of a hormone to affect the activities of a particular cell depends on that cell having specific receptors with which the hormone molecules can bind. The number of receptors present in a target cell is a constant, invariable number.

What do we call dawins explanation for how new species emerge?