What does a hypothesis have to be?

The process by which the organisms that are better adapted to the environment survive and reproduce is called a. variation b. extinction c. natural selection d. evolution

Which of the following is a difference between neutral energy balance and positive energy balance? Group of answer choices Energy intake increases during neutral energy balance, whereas energy intake decreases during positive energy balance.

Arrange the events in the correct order to describe how the magnetic field forms around Earth. a - The electric currents create a magnetic field on Earth b - A continuous flow of liquid iron creates electric currents inside Earth c - Iron - rich

Suggest explain a method that could make seawater drinkable by humans.

What kinds of questions can be answered and what kinds of problems can be solved by science? what kinds of questions are outside the realm of science?

What is the major function of the valves found in human veins?

Lipids in a bilayer can diffuse laterally at a relatively fast rate, but / "flip-flop/" from one leaflet to the other very slowly without catalysis.

Which of the following groups contain organisms that have tissues and organ systems? A. prokaryotes. B. bacteria. C. eukaryotes. D. protists.

What colors can a turtle see

If rats are allowed to wander through a complicated maze, they will subsequently run the maze with few errors when a food reward is placed at the end. their drastic change in performance once given a reward describes