What's all the parts in a heart!

Which elements are in the substance that makes up 60% of the human body. A. hydrogen and oxygen B. phosphorus and nitrogen C. calcium and oxygen D. carbon and phosphorus

How many times does DNA replication occur in meiosis?

7. Both slicing an apple and a chemical change such as cooking an egg cannot be reversed. However, why is slicing an apple still considered only a physical change?

What directs cellular activities

Wheredo i find the answers

Cameron is collecting data to determine the time of completion for each stage of germination in seeds. He is using bean seeds for his investigation and recording his results. He repeats his data collection many times to obtain reliable results.

Which human action has not lead to significant changes in Earth's biomes?

Which two characteristics of living things do viruses exhibit?

You are studying the source of new virus that has recently infected humans. You suspect that the virus was transferred from other primates (they exhibit a similar infection), specifically chimpanzees, gorillas, or orangutans.

According to the diagram liverworts are