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.
C ITTTTTTTT IS C THANK MEE LATERRRRR
Grayson should title her notes "Uranus". The notes she collected described the planet Uranus because it's a gas giant with a methane atmosphere, very far from the sun and very cold, and it rotates top to bottom.
To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight.
Answer:
I think it mRNA will be the answer