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Questions in biology

[Answered] Elias conducted an experiment about the effects of exercise on the heart rate of teenagers. Before morning basketball practice, he asked the members of his high school team to be his subjects. He measured each of their heart rates before and after a set of exercises. Which change would most reduce the bias of his experimental design?

[Answered] Why does increasing soil salinity have adverse effects on plant cells?

[Answered] Describe how a physical property, such as mass or texture, can change without causing a change in the substance.

[Answered] What kind of relationship would a hummingbird and a daffodil have?

[Answered] Where is the largest telescope built?

[Answered] Are insects endothermic or ectothermic?

[Answered] Explain the difference between mitosis and meiosis.

[Answered] What will happen if bone marrow gets destroyed?

[Answered] What are 'pneumatophores'? How do they help the plant? Give an example.

[Answered] List the function of the nucleus. Name the cell part that has tiny holes.