In an attempt to understand the cause of ADHD, researchers are studying influences, such as adoption and twin studies.

Sam and ben have discovered some strange animals living in the woods behind their house. ben is excited because he believes they are marsupials, an animal he's never observed in the wild before. his brother is sure it is not. what feature should the boys consider in deciding whether the animals are marsupials?

The federal reserve is responsible for overseeing all a. income tax refunds b. changes in tax policies c. government spending d. depository institutions

The great depression severely affected the following groups? select all that apply. politicians, bankers, farmers, business people, factory workers