At the end of the esophagus is a thick ring of a muscle called a sphincter which allows food to enter the stomach but not from the stomach back into the esophagus. Once the food enters the stomach it is mixed with the digestive juices.
Answer:
C
Explanation:
Greenhouse gases allow for sunlight, and the heat radiation to enter the atmosphere, and then prevent it from exiting the atmosphere. Known as the greenhouse effect.
Hey there,
Scientists ensure the validity by sharing results with others to make sure they get the same results. They also conduct the expiremnt more than once.
Hope I helped :)
Answer:
the answer is " POPULATION".
Explanation:
A population is a group of individuals of same species living and inhabiting the same environment. in other words : All the inhabitants of a particular space forms a population in which the species interbreed.
so the correct answer is POPULATION.
