What is nessecary for a convection cell to be set up in a fluid?

1.) Thermal gradient and changes in density.

2.) Changes in density

3.) Thermal gradient

Which type of fossil leaves its pattern on sediment that later turns into hard rock?

Which pairing matches the type of substance with the item it donates?

Briefly differentiate "White Matter" & "Grey Matter".

A male Flagus fly with the Barkus phenotype is crossed with a female who has the wild-type phenotype. A second cross is performed in which the female Flagus fly has the Barkus phenotype and the male has the wild-type phenotype.

In the future, where will most population growth take place? With what possible consequences?

Which rays of the electromagnetic spectrum are responsible for causing sunburn when you spend too much time exposed at the beach? A) Ultraviolet B) X-rays C) Gamma D) Visible E) Infrared Correct answer will be given the Brainliest! : D

Food and medical procedures can expose people to radiation. Therefore, the effects of radiation from a nuclear power plant are not a reason for concern. True False

What are 2 characteristics of tropism?

Rubbing the balloons against the woolen fabric or your hair creates static electricity. This involves negatively charged particles (electrons) jumping to positively charged objects.

Which of the following is an excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle? A) gamma aminobutyric acid B) acetylcholine C) cholinesterase D) norepinephrine