3 A square metal plate each side 50 cm long
at 0°C has a circular hole of radius 10 cm in
the middle of it. At what temperature will
the hole expand to a radius 10.2 cm?
(Take 0.= 1.25 x 105 K.)​

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

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.