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Where does the energy start in this food chain?

• Plant
• Sun
• Deer
• Wolf

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Very little sun reaches this part of the rainforest.

• equal
• earth
• floor
• carnivorous 

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All the organisms on earth get their energy directly or indirectly from?

• Oxygen
• Water 
• Nitrogen
• The Sun

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What is the source of energy for photosynthesis?

• carbohydrates-chemical
• sunlight-radiant
• heat-thermal
• television-electrical

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Plants use ____________________ to make their own food.

• Carbon Dioxide

• Oxygen

• Materials

• Gravity

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Where does the energy start in this food chain?

• Plant
• Sun
• Deer
• Wolf

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Green plants and algae make their own food through photosynthesis. What is photosynthesis?

• a cell process that uses energy from sunlight to convert water and oxygen into food

• a cell process that uses energy from sunlight to convert water and glucose into food

• a cell process that uses energy from sunlight to convert water and chlorophyll into food

• a cell process that uses energy from sunlight to convert water and carbon dioxide into food

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The process by which plants, algae, and some bacteria use sunlight, carbon dioxide and water to produce carbohydrates and oxygen.

• photosynthesis

• cellular respiration

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An organelle that captures energy from the sunlight in order to use it to produce food in plant cells is ______________.

• Chromatin
• Chloroplast
• Cytoplasm
• Cell Membrane

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Sb3a

Scientists conducted an experiment to determine how different wavelengths of light affected photosynthesis. They used two groups of the same plants. The leaves of Group 1 were covered with transparent green plastic. The leaves of Group 2 were not covered with any plastic. The results show that the plants photosynthesized best when their leaves were not covered in any plastic. Which hypothesis do the results support?

• If leaves are uncovered, then their chloroplasts will produce more oxygen than the leaves that are covered in green plastic.

• If leaves are covered in green plastic, then their mitochondria will absorb more carbon dioxide than the mitochondria of uncovered leaves.

• If leaves are uncovered, then their chloroplasts will release more carbon dioxide than the chloroplasts of leaves covered in green plastic.

• If leaves are covered in green plastic, then their mitochondria will produce more oxygen than the leaves that are uncovered

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