Answer the following question given this paragraph: To the extent that behaviors are controlled by genes, they may evolve through natural selection. If behaviors increase fitness , they are likely to become more common over time. If they decrease fitness, they are likely to become less common. Q: To the extent that behaviors are controlled by what, they may evolve through natural selection? Choices: - rna - dna - mutation - genes A:
genes
(Question)
Answer the following question given this paragraph: In other covalent bonds, electrons are shared equally. These bonds are called nonpolar covalent bonds. Neither atom attracts the shared electrons more strongly. As a result, the atoms remain neutral in charge. The oxygen (O 2 ) molecule in the Figure below has two nonpolar bonds. The two oxygen nuclei have an equal force of attraction for their four shared electrons. Q: How are electrons shared in covalent bonds? Choices: - randomly - orderly - unequally - equally A:
(Answer)
equally
Ques: Answer the following question given this paragraph: Normally blood needs to flow freely through our arteries. Plaque in an artery can restrict the flow of blood. As you can probably imagine, this is not an ideal situation. And eating right, exercising, and not smoking can help keep your arteries healthy. Q: What impact can plaque in an artery have on the flow of blood? Choices: - no effect - allergic reaction - increased flow - restriction A:
Ans: restriction
(Q).
Answer the following question given this paragraph: Sedimentary rocks are formed in horizontal layers. This is magnificently displayed around the southwestern United States. The arid climate allows rock layers to be well exposed ( Figure below ). The lowest layers are the oldest and the higher layers are younger. Q: Sedimentary rocks form in what kind of layers? Choices: - stacked - magnetic - vertical - horizontal A:
(A).
horizontal
Ques:Answer the following question given this paragraph: A circuit that consists of one loop is called a series circuit. If its single loop is interrupted at any point, no current can flow through the circuit. Q: What is a circuit that consists of one loop called? Choices: - speaking circuit - episode circuit - dramatic circuit - series circuit A:

Ans:series circuit
Ques:Answer the following question given this paragraph: The most important way to keep your skin healthy is to protect it from ultraviolet light. Over-exposure to ultraviolet light can cause skin cancer. Keeping the skin clean can help prevent acne. Q: What is one major cause of skin cancer? Choices: - visible light - sunscreen - infrared light - ultraviolet light A:

Ans:
ultraviolet light