This occurs through the process of cell specialization, where in some cells genes are active whereas in others they are not.
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chemical reactions involve collisions between molecules. most collisions don't have either the right orientation or enough energy for the reaction to proceed. the molecules just bounce off each other, unchanged. incidentally that is why reactions proceed faster as the temperature increases - high temperature means molecules are moving faster
Explanation:
hope this helps
Answer:
Humans affect the environment in positive and negative ways. Cutting down trees and littering have a negative effect on animals and plants. Protecting endangered species and cleaning lakes and seas has a positive effect on the environment.
I’m not exactly sure what you mean, but the diaphragm is a muscle that aids in the breathing process.
