Answer the following question given this paragraph: Unlike males, females are not influenced by the male sex hormone testosterone during embryonic development. This is because they lack a Y chromosome. As a result, females do not develop male reproductive organs. By the third month of fetal development, most of the internal female organs have formed. Immature eggs also form in the ovary before birth. Whereas a mature male produces sperm throughout his life, a female produces all the eggs she will ever make before birth. Q: Females are not influenced by the male sex hormone testosterone during embryonic development because they lack what? Choices: - x chromosome - m chromosome - z chromosome - y chromosome A:
y chromosome
(Question)
Answer the following question given this paragraph: Chemicals that are applied to farm fields include fertilizers and pesticides. Excess chemicals can be picked up by rainwater. The chemicals can end up in streams, ponds, lakes, or the ocean. Dissolved fertilizer causes tremendous numbers of water plants and algae to grow. This can lead to dead zones where nothing can live in lakes or the coastal oceans. Q: Dissolved fertilizer can ultimately lead to the creation of what in lakes or coastal oceans, which means a place where nothing can live? Choices: - extinction zone - deceased zone - hydrothermal vent - dead zone A:
(Answer)
dead zone
Ques: Answer the following question given this paragraph: Q: Interactions between plants and other organisms result in cycling of chemical nutrients within what? Choices: - habitat - air - water - ecosystem A:
Ans: ecosystem
(Q).
Answer the following question given this paragraph: Genes are a major determinant of human skin color. However, exposure to ultraviolet radiation can increase the amount of pigment in the skin and make it appear darker. Q: Exposure to what can increase the amount of pigment in the skin and make it appear darker? Choices: - gamma rays - sunlight - nuclear radiation - ultraviolet radiation A:
(A).
ultraviolet radiation
Ques:Answer the following question given this paragraph: Because the Sun is not solid, it does not have a defined outer boundary. It does, however, have a definite internal structure with identifiable layers ( Figure below ). Since the layers are not solid, the boundaries are fuzzy and indistinct. From inward to outward, the layers are: the core, the radiative zone, and the convection zone. Q: What is the innermost layer of the sun called? Choices: - Convection Zone - Chromosphere - Photosphere - the core A:

Ans:the core
Ques: Answer the following question given this paragraph: One type of radioactivity is alpha emission. What is an alpha particle? What happens to an alpha particle after it is emitted from an unstable nucleus?. Q: Alpha emission is a type of what? Choices: - radiation - heat - light - radioactivity A:
Ans:
radioactivity