Give reasons. a) Big cats have Sharp teeth

b) some monkeys have long prehensile tails.

c) Penguins do not have air spaces in their bones

Describe the interaction that occurs between two objects with the same electrical charge.

Awhite powder is added to a solution. the images show observations made before the powder is added, just after the powder has been added, and a little while later. (the liquid in the small beaker is phenol red solution.) what evidence shows that a chemical change has taken place?

What can happen to an atoms electrons when an electric current is passed through the atom?