*Question*
An animal usually requires a warm body temperature for survival, and temperature Temperature is an measurement of the amount of heat. Given these facts, what do most animals need to be sure they survive on the Earth among the following options: - smell and taste - biodiversity - a building to live in - regulated body heat - a mate - sense organs - food and shelter - a car
**Answer**
regulated body heat

*Question*
Active immunity results when an immune response to a pathogen produces memory cells, and if the parasite causes harm, it is a pathogen. Given these facts, what creates active immunity from a parasite among the following options: - Cooking - memory cells - alpacas - peachleaf willow - Allergies - mammals - an organism's body - animals
**Answer**
memory cells

*Question*
Matter vibrating can cause sound, and when the waves pass our ears, a sound is detected. Given these facts, what can our ears detect among the following options: - extremely high frequencies - matter vibrating - population movement - extremely high-pitched sound - electromagnetic energy - matter's height - sensory neurons - rays or beams
**Answer**
matter vibrating

*Question*
If a living thing becomes too cold then that living thing will die, and every year people die from hypothermia in Alaska when the temperature is above freezing. Given these facts, what do we experience when we get too cold among the following options: - Hibernation - sweating - Dehydration - Hypothermia - Extreme hunger - Pollution - hyperthyroidism - Dangerous weather
**Answer**
Hypothermia