1. What is the meaning of the term diffusion? O transport or dispersing of molecules until there is a uniform concentration of molecules throughout a solution
O transport of water to dilute molecules that are highly concentrated on the other side of a membrane
O transport across a membrane requiring a transport protein but not requiring energy
transport of materials or molecules small enough to cross through pores in a membrane

Elephants in the savanna regions of africa dig holes in dried up river beds to reach water lying just below the surface. these holes provide drinking water for other animals as well. so, without the elephants, many animals might otherwise die from lack of water during the dry season. the location in which the elephants live is an example of a/n and the role they play in creating water holes is an example of a a) ecosystem; habitat b) community; niche c) habitat; niche d) niche; habitat

Me with these questions image attached

What organ systems are working to you cool down after a workout?