Ijust need these two questions and im !

1. at which point will a cloud form?

a) when the temperature of the rising air rises above the dew point

b) when the temperature of the rising air falls below the dew point

c) when the water vapor forms ice crystals

d) when air reaches 10,000 ft

2. what causes convection currents?

a) density differences

b) earth's gravity

c) fossils

d) they don't exist

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h, o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?

Which of the following are responsible for sending messages from the hypothalamus to the thalamus?