Answer:
"rubbed together"
Explanation:
Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces.
Answer:
b. a greater chance to survive if environmental conditions suddenly change
Explanation:
When a species of organism has a wide variety of characteristics, it means that that species has many opportunities to adapt and survive different environmental conditions, even if those conditions change suddenly. This is because, this variety of characteristics allows this species to adopt the most variable survival strategies.
The correct answer is A. maintaining homeostasis.
Homeostasis is a term referring to an organisms continuous process of maintaining and auto-regulating the conditions of its internal environment. Variables such as pH, temperature, and fluid balance need to be at optimal conditions in order for the organism to function properly.
In this example, the phosphate buffer system permits the organisms to maintain a constant pH in their intracellular fluid. This is one of the organism's homeostatic mechanisms.
Temperature, pressure and composition.
