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? Read this paragraph and choose the correct option from the provided answers: 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. Choices: - vacuum - transparency - invisible spectrum - rainbow of colors A:
rainbow of colors

Q: What bonds cause water to have a high boiling point, leaving most water on earth in a liquid state rather than in a gaseous state? Read this paragraph and choose the correct option from the provided answers: Hydrogen bonds cause water to have a relatively high boiling point of 100C (212F). Because of its high boiling point, most water on Earth is in a liquid state rather than in a gaseous state. Water in its liquid state is needed by all living things. Hydrogen bonds also cause water to expand when it freezes. This, in turn, causes ice to have a lower density (mass/volume) than liquid water. The lower density of ice means that it floats on water. For example, in cold climates, ice floats on top of the water in lakes. This allows lake animals such as fish to survive the winter by staying in the water under the ice. Choices: - potassium bonds - carbon bonds - helium bonds - hydrogen bonds A:
hydrogen bonds

Q: Kelvin is a temperature measure in which the lowest temperature is what? Read this paragraph and choose the correct option from the provided answers: Kelvin is a temperature measure in which the lowest temperature is absolute zero. Choices: - anomalous zero - accurate zero - definitive zero - absolute zero A:
absolute zero

Q: Evolution happens because of what? Read this paragraph and choose the correct option from the provided answers: Evolution happens because of natural selection . Good traits become more common in a population. Bad traits become less common. The deer mouse, species Peromyscus maniculatus gives an example of evolution by natural selection. In Nebraska, this mouse is typically brown. But in places where glaciers dropped lighter sand over the darker soil, the mice are light. Why? Because predators could more easily spot the dark mice on light sand. The lighter mice were more likely to survive and have offspring. Natural selection favored the light mice. Over time, the population became light colored. Enough changes may take place over time that the two types of mice become different species. Choices: - natural resources - natural change - natural process - natural selection A:
natural selection