Habitat is a place in which an animals lives
A niche is the organisms place or job in the environment
The correct answer is ionization.
Ionization refers to the procedure by which a molecule or an atom attains a negative or positive charge by losing or gaining electrons to produce ions, usually in combination with other chemical modifications.
Ionization can result due to the loss of an electron after collisions with other atoms, subatomic particles, molecules, and ions, or through the association with electromagnetic radiation.
Answer: Point source
Explanation:
An exotoxin is a toxic substance secreted by bacteria. The botulism exotoxin is the exotoxin secretes by bacterial strain named as Clostridium botulinum.
Point source outbreak is a condition in which people are exposed to the same source of infection from a pathogen. This may occur due to the consumption of a single meal which is being infected by the pathogen. This may lead to incidences of food poisoning, disease and even mass death.
Secretion of human chorionic gonadotropin [HCG] only occur during pregnancy in the placenta. The concentration of this hormone increase rapidly during the first three months of pregnancy; the amount in the blood stream doubles every two to three days as the development of the placenta and embryo progress. The hormone reaches its maximum concentration peak around the sixth week of pregnancy and after this, its concentration decline.
If NOCTURNAL ACTIVITY is one of the choices, that's your answer.
