1) Stage 1: What is a property of gas? A) Molecules slide past one another
B) Molecules vibrate in place
C) Molecules are separated and far apart and move independently from each other

2) Stage 1: What is a property of a liquid?
A) Molecules slide past one another
B) Molecules vibrate in place
C) Molecules are separated and far apart and move independently from each other

3) Stage 1: What is a property of a solid?
A) Molecules vibrate in place
B) Molecules are separated and far apart and move independently from each other
C) Molecules slide past one another

4) Stage 2: At what temperature does water (liquid) change to a solid (freezing)?
A) 100 degrees C
B) 10 degrees C
C) 50 degrees C
D) 0 degrees C

5) Stage 2: At what temperature does water start to boil (boiling point)?
A) 50 degrees C
B) 10 degrees C
C) 0 degrees C
D) 100 degrees C

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.

that scientist would be robert hooke

"it built up in the atmosphere"

i think thats it, idk, i tried looking for this exact q& a for grad. and idk if i got this question right or sorry if im wrong

we solve the problem using the hardy-wineberg equation.

let us start with the homozygous recessive proportion of individuals with sickle cell anaemia,

we have the proportion as q² = 0.25.

∴ q = 0.5 (frequency of hbs in population)

further,

solving for the frequency of normal cell by using the fact that,

p + q = 1

∴ p = 1 - 0.5 = 1 - 0.5 = 0.5

now we can calculate 2pq in p² + 2pq + q², which is the frequency for heterozygous carriers of sickle cell anaemia,

∴ 2pq = 2 x 0.5 x 0.5 = 0.5

and the homozygous normal cell individuals proportion is given by the expression,

∴ p² = 0.5² = 0.25

hence, the carriers for sickle cell anaemia are in proportion, 0.5, or 50%.