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Questions in biology

[Homework Help] Robert Hooke's discovery helped scientists learn more about _____.

[Homework Help] Why don't arteries need valves?

[Homework Help] Discuss the advantages and disadvantages of methods used to reduce the impact of human activity on ecosystems.

[Homework Help] True or false: Segments of a tapeworm are called proglottids.

[Homework Help] The cell walls of the Kingdom Plantae are made of what?

[Homework Help] Some variation must be present in a population in order for natural selection to take place. These variations arise from mutations in the DNA and what other source?

[Homework Help] How does deposition change Earth's surface?

[Homework Help] Explain below the increase in the number of black squirrels using the ideas of natural selection. Write about: - Variation - Competition - Survival - Reproduction

[Homework Help] List 10 interesting questions on plant cells. 1. What is the function of the cell wall in plant cells? 2. How do chloroplasts contribute to a plant cell's ability to perform photosynthesis? 3. What is the role of the central vacuole in maintaining cell turgor pressure? 4. How does the structure of a plant cell's plasma membrane aid in its function? 5. What is the difference between the rough and smooth endoplasmic reticulum in plant cells? 6. How do plant cells differ from animal cells in terms of their organelles? 7. What are plasmodesmata and what role do they play in plant cells? 8. How do mitochondria in plant cells contribute to cellular respiration? 9. What is the significance of the Golgi apparatus in plant cells? 10. How do plant cells communicate with each other through chemical signals?

[Homework Help] In a nuclear power plant, what is used to change water into steam?