Answer:
neurotransmitter is a chemical messenger that carries, boosts, and balances signals between neurons (also known as nerve cells) and target cells throughout the body.
The answer is d. Ingestion, digestion, absorption, elimination.
There are 4 phases of the digestive system function:
1. Ingestion - the process of the food entering the mouth.
2. Digestion - the process of breaking the food into small particles.
3. Absorption - the process of the absorbing small food particles into the blood from the intestines.
4. Elimination - is the process of removing the waste out of the body.
Answer: fossils can be formed only when a living thing is buried soon after it dies. If it is not buried soon enough, it decays. For this reason, most fossils are found in sedimentary rocks that were once under water.
Explanation:
Necessary because it keeps heat in and keeps the planet at the right temperature for life.
It can harm the planet if more pollution occurs and the greenhouse gas effect traps too much heat and causes global warming
