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Questions in biology

[Homework Help] Photosynthesis uses sunlight to convert water and carbon dioxide into:

[Homework Help] If you were looking at a multi-cellular organism with a microscope, would you be looking at a prokaryotic or eukaryotic organism? How do you know?

[Homework Help] What is the layer of bedrock near Earth's surface that forms a continuous shell around Earth called?

[Homework Help] Which rock is formed from broken-down pieces of rock? How do these pieces harden into rocks in nature?

[Homework Help] What element has 81 protons in the nuclei of its atoms?

[Homework Help] Which of the following explains how natural selection leads to evolution? A. Conditions in the environment reduce competition for resources within a species. B. Helpful variations accumulate among surviving members of the species. C. Overproduction provides food for stronger members of the species. D. Environmental changes favor weaker members of the species.

[Homework Help] Explain how interactions between genes and the environment can affect phenotype.

[Homework Help] Where do male and female gametophytes develop in gymnosperms?

[Homework Help] What are real-life examples of vacuoles?

[Homework Help] Describe how Mendel showed that the green-seed trait did not disappear but was only masked.