Q: Mutations that lead to cancer usually occur in genes that control the cell cycle. these include tumor-suppressor genes and what? Choices: - extinction - oncogenes - apparition - oncogenes - Darkness Oncogenes - proto-oncogenes A:
proto-oncogenes

(Question)
Q: What branch of science aims to understand all about our planet and its environments? Choices: - biology - immunology - petrology - earth science A:
(Answer)
earth science

Ques: Q: Excretion is the process of removing excess water and wastes from the body. what are the main organs of excretion? Choices: - eyes - lungs - brains - kidneys A:
Ans: kidneys

(Q).
Q: What gas is expired out of the body during exhalation? Choices: - carbon monoxide - hydrogen - oxygen - carbon dioxide A:
(A).
carbon dioxide

Ques:Q: What type of systemic response involves lymphocytes? Choices: - natural - chronic - inflammation - immune A:

Ans:immune

Ques: Q: Why does water infiltrate the ground? Choices: - gravity - prolonged drought conditions - run-off from flooding - because soil and rocks are porous A:
Ans:
because soil and rocks are porous