What was: the big bang (science)
answer for 10

The universe sprang into existence as singularity around 13.7 billion years ago.

Explanation:

in physics zero. in muscle fatigue could be high

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.