ANSWER: B: ONE OF THE SPIRAL ARMS OF THE MILKY WAY
Explanation: There are many arms to every galaxy, in our case, the Milky Way. To each spiral arm is one solar system, which is also why it so difficult to explore space.
True
Explanation:
The statement that when the distance between the balls decreases, the size of arrow increases because it shows the gravitational pull between the two balls which increases is true.
According to Newton's law of universal gravitation:
"The gravitational force of attraction between two bodies is directly proportional to the product of their masses and inversely proportional to the square of their separation".
Mathematically, the law is written as:
F = 
F is the gravitational force
G is the universal gravitational constant
m is the mass of the body
r is the distances between them.
We see that the less the distance between the two bodies the more the gravitational force they have.
learn more:
Gravitational force brainly.com/question/1724648
#learnwithBrainly
Answer:
The diffusion of water is called osmosis.
Explanation:
<u>Osmosis</u><u> </u><u>is</u><u> </u><u>a</u><u> </u><u>type</u><u> </u><u>of</u><u> </u><u>diffusion</u><u> </u><u>in</u><u> </u><u>which</u><u> </u><u>water</u><u> </u><u>molecules</u><u> </u><u>diffuse</u><u> </u><u>through</u><u> </u><u>a</u><u> </u><u>particular</u><u> </u><u> </u><u>permeable</u><u> </u><u>membrane</u><u> </u><u>of</u><u> </u><u>high</u><u> </u><u>water</u><u> </u><u>concentration</u><u> </u><u>to</u><u> </u><u>areas</u><u> </u><u>of</u><u> </u><u>lower</u><u> </u><u>water</u><u> </u><u>concentration</u><u>.</u>
The parental generation makes the F1 generation not the F2
Salt. salinization of the soil occurs.