A scientist is examining cells under a microscope. Which would best help the scientist identify the tissue as plant or animal? A. The presence or absence of a cell wall

B. the presence or absence of DNA

C. Plant cells would be green

D. Animal cells would contain a nucleus

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Match each description to the appropriate biome. tropical savanna desert tropical rain forest taiga tundra has sparse vegetation and very cold temperatures located near the equator and contains trees that form dense canopy layers is very hot and dry, and has plants that need little water has cold winters, heavy snowfall and is dominated by conifers has warm temperatures and is dominated by grasses

Describe two recent or ongoing space missions.

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