Answer: A. environmental influences
A development in terms of biology is a gradual process of changes that occurs in an organism until the organism attains maturity or adulthood. Development can be physiological and mental development. Environmental influences are influences of nature on development. Some of the environmental influences are nutrition, altitude, temperature and climate. For example sunny weather conditions in a region can induce dark complexion in the habitants.
I believe the correct answer is A. Increases the rate of a chemical reaction. This is because they act as catalysts.
Answer:
Improved food sources
Explanation:
Artificial selection is also known as selective breeding. Its a deliberate process of breeding plants and animals for better breeds.
It's also called genetic engineering.
This in a way impacts the society positively as crops with better yield are produced. Example is wheat that has more grain or in animals, cow that produces more milk.
Neutrons
The atomic mass is the weight of the protons and neutrons in the nucleus.
Answer:
Climate and slavery
Explanation: Slaves were the main reason that there was food before the end when Abraham was president. Climate and slavery can change how the crops were grown. I'd also say the geography was messed up then due to the climate. (sorry if wrong Q-Q)