C- Single-celled organisms and soft, boneless animals.
Answer:
Enzyme Activity- Responsible reactions Enzyme catalyze nearby substrates
Cell to Cell Recognition- Recognize molecules on surface of the other cells
Cell Signalling- A chemical messenger that binds a membrane protein causing to change shape and relay the message inside a cell.
Transport materials- Provides channels for a certain solutes to pass through membrane
Answer:
There are 5 steps of the scientific method
1. Make a question
2. Do some research for that question
3. Make a hypothesis ( guess what might happen during the experiment)
4. Test and Collect Data
5. Conclusion ( write what happened during the experiment and what you learned)
The three major types of pollution are air pollution, water pollution, and land pollution. Sometimes, air pollution is visible. A person can see dark smoke pour from the exhaust pipes of large trucks or factories, for example. More often, however, air pollution is invisible.