This is associative learning.
The reactions of George and Ken are based on when they are startled. George will learn to associate his sister's crying with him being startled because it happens every time his sister cries.
Whereas Ken will not know when his sister will cry or when he will be startled by the crying so this has no affect on Ken.
Hence, crying will affect George but not Ken.
Neutrons are the subatomic particles that are stored in the core of an atom with the protons. An atom is mostly empty space. At its center is a nucleus made up of particles made up of particles with a positive electric charge called protons and electrically neutral neutrons.
Isotopes is a word that gets thrown around in chemistry very often. Isotopes are different versions of an element or different versions of a certain kind of atom. Isotopes deal with atoms having different numbers of neutrons but the element will be the same but one may be heavier or lighter than another.
D. Sexual reproduction produces offspring that have a greater genetic variety and durable zygotes that can help green algae species survive unfavourable conditions.
the answer is endonuclease enzyme
Answer:
⇒ D. Blood sugar levels dropping after missing a meal
Explanation:
⇒ Words such as after, caused, because, and then signals response.