*Question*
You are presented with the question "besides proteins, what do some viruses have an envelope of?" and the following answer choices: - bioaerosols - parasites - more abundant - gravity - heat energy - Energy - red blood cells - body fats Now knowing that some viruses have an envelope of phospholipids and proteins and phospholipids are body fats, too, choose the best answer.
**Answer**
body fats

*Question*
You are presented with the question "What social group is on Richard's shield?" and the following answer choices: - humans - insects - people - A pride. - fur seals - animals - bears - mammals Now knowing that lions live in social groups called prides and richard the Lion Heart's shield has three lions on it, choose the best answer.
**Answer**
A pride.

*Question*
You are presented with the question "What has a negative impact on the population size of a species?" and the following answer choices: - Pesticides - influenza - steroids - liver cancer - cloudy and rainy weather - massive damage - cosmetic testing - killing insects Now knowing that harming an animal species has a negative impact on the population size of that species and animals are harmed because of cosmetic testing, choose the best answer.
**Answer**
cosmetic testing

*Question*
You are presented with the question "what do behaviors that improve fitness increase through?" and the following answer choices: - density - evolution - Plants growth - gravity - animals - competition - death - environment Now knowing that behaviors that improve fitness increase through natural selection and natural selection is the mechanism of evolution, choose the best answer.
**Answer**
evolution