Which example most effectively illustrates the dual nature of light?

a.
cameras that use photographic film
b.
solar panels
c.
radio antennas
d.
burglar alarms

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.

answerdmitry mendeleyev made a workable classification of the elements