What does the immune system protect the body against?

O changes of the internal body temperature

O changing environmental conditions

O changes caused by harmful pathogens

O changes in the pH of the blood

What's the difference between pollination and fertilization?

The production of pink flowered plants from a cross between a red flowered plant and a white flowered plant is an example of A) multiple alleles. B) complete dominance. C) incomplete dominance. D) codominant inheritance.

Almost every cell in the human nody is replaced every few years through the process of

Explosive devices often use chemicals, such as ammonium nitrate and gunpowder, and components commonly used in electronic devices.

What are two characteristics of a scientific information source that may indicate the information is unreliable?

Saliva contains digestive enzymes to begin digesting:

Is there more lymphoid tissue in adults than in children?

Which is the correct order of processes that occur as water moves from a lake to a cloud and then back to Earth's surface?

How can changes in one part of earth affect another part

You and other scientists have been able to get the same results after many experiments. What is this proven data called? A. theory B. hypothesis C. scientific law