Ques:Q: What is an insect's hard outer exoskeleton made out of? Read this paragraph and choose the correct option from the provided answers: Figure 3.11 Insects have a hard outer exoskeleton made of chitin, a type of polysaccharide. (credit: Louise Docker). Choices: - lectin - casein - melanin - chitin A:

Ans:chitin
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Ques:Q: What is the process of producing eggs in the ovary is called? Read this paragraph and choose the correct option from the provided answers: The process of producing eggs in the ovary is called oogenesis. Eggs, like sperm, are haploid cells, and their production occurs in several steps that involve different types of cells, as shown in Figure below . You can follow the process of oogenesis in the figure as you read about it below. Choices: - gametogenesis - meiosis - morphogenesis - oogenesis A:

Ans:oogenesis
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Ques:Q: More uv rays reach the ground due to a decrease in what layer in the stratosphere? Read this paragraph and choose the correct option from the provided answers: With less ozone in the stratosphere, more UV rays reach the ground. More UV rays increase skin cancer rates. Just a 1 percent loss of ozone causes a 5 percent increase in skin cancer. More UV rays also harm plants and phytoplankton. As a result, they produce less food. This may affect entire ecosystems. Choices: - troposphere - smog - gases - ozone A:

Ans:ozone
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Ques:Q: What takes place at some coastlines or along the equator and brings cool, nutrient-rich water to the surface? Read this paragraph and choose the correct option from the provided answers: Upwelling takes place at some coastlines or along the Equator. Upwelling brings cool, nutrient-rich water to the surface. Choices: - high tide - red tide - flooding - upwelling A:

Ans:
upwelling
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