Q: Answer the following question given this paragraph: Capillaries are the smallest type of blood vessels. They connect very small arteries and veins. The exchange of gases and other substances between cells and the blood takes place across the extremely thin walls of capillaries. Q: What are the smallest type of blood vessels? A:

OPTIONS:
- viens
- arteries
- neurons
- capillaries

A: capillaries

Q: Answer the following question given this paragraph: People themselves are also affected by the large size of the human population. Some people have a lot; some have very little. Many people refer to the abundance of luxury items in some people's lives as over-consumption . People in developed nations use 32 times more resources than people in the developing countries of the world. The symbol of this is CO 2 emissions, which are a waste product from fossil fuel burning. Populations that burn the most fossil fuels have a high standard of living. Q: What is a waste product from fossil fuel burning? A:

OPTIONS:
- smog
- oxidation
- hydrogen gas
- co2 emissions

A: co2 emissions

Q: Answer the following question given this paragraph: Absorption of Light Light energy enters the process of photosynthesis when pigments absorb the light. In plants, pigment molecules absorb only visible light for photosynthesis. The visible light seen by humans as white light actually exists in a rainbow of colors. Certain objects, such as a prism or a drop of water, disperse white light to reveal these colors to the human eye. The visible light portion of the electromagnetic spectrum is perceived by the human eye as a rainbow of colors, with violet and blue having shorter wavelengths and, therefore, higher energy. At the other end of the spectrum toward red, the wavelengths are longer and have lower energy. Q: In plants, pigment molecules absorb only visible light for photosynthesis. the visible light seen by humans as white light actually exists in a what? A:

OPTIONS:
- vacuum
- transparency
- invisible spectrum
- rainbow of colors

A: rainbow of colors

Q: Answer the following question given this paragraph: A molecular formula of the compound carbon dioxide is CO 2 . One molecule of carbon dioxide consists of 1 atom of carbon and 2 atoms of oxygen. We can calculate the mass of one molecule of carbon dioxide by adding together the masses of 1 atom of carbon and 2 atoms of oxygen. Q: One molecule of carbon dioxide consists of 1 atom of carbon and 2 atoms of what element? A:

OPTIONS:
- methane
- hydrogen
- nitrogen
- oxygen

A:
oxygen