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: a.The study is funded by a group with a financial interest in the outcome.
Explanation:
Junk science is a term that is used to describe scientific research or data that is false and fraudulent and is usually presented in order for the people behind it to be able to push an agenda or assertion.
If a study is funded by a group with a financial interest in the outcome, the research could end up being junk science as the backs might persuade the researchers to manipulate the data in such a way that it would favor them.
For instance, a Big Tobacco funded research into lung cancer finding that smoking does not contribute as much as previously thought to lung cancer
Answer: Compounds which have carbon and hydrogen atoms in their structure or formula are known as organic compounds. For example, a molecule of is organic because it has carbon and hydrogen atom in its formula
Explanation:
Compounds which have carbon and hydrogen atoms in their structure or formula are known as organic compounds.
For example, a molecule of CH_{4} is organic because it has carbon and hydrogen atom in its formula.
Whereas atoms which do not contain carbon atom in their formula or structure are known as inorganic molecule. For example, NaCl is an inorganic molecule.
Thus, we can conclude that an organic molecule will always contain carbon and hydrogen.
D. Sexual reproduction produces offspring that have a greater genetic variety and durable zygotes that can help green algae species survive unfavourable conditions.
