Solids has a definite shape and sizes or matter
When could is used it refers to an ability that <span>a person generally had in the past or to something that was generally possible in the past, can is present.
I could wash the dishes for you. (having the ability to do it)
I can wash the dishes for you. (its actually going to be done)
hope this helps you! :-)</span>
19. D
20. A
21. D
22. C
23. C
24.B
The human population has grown tremendously throughout the last 100 years due to the advancements in math and science. The improvement in such things like medicine have allowed for civilians to to have healthier children. But at this rate, and the way humans treat the planet, we may be limited to our resources. This will cause a vast majority of conflict between people and the government. It may come down to the point where humans will have to be limited to only a curtain amount of children making people unhappy.
