Describe the how the sun's mass affects planets in a solar system.

The sun's mass determines how strong its gravity is. And its gravity determines the orbital distance and speed of a planet like Earth. ... If the sun were less massive with a weaker gravitational pull, Earth would have to orbit slower or it would be flung out of the solar system

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.