Plants use unsaturated fatty acids to store energy, and energy is measured in Joules. Given these facts, what measurement is used for something plants use unsaturated fatty acids to store among the following options: - amperes - heat - volts - seconds - vitamin C - electron - glucose - joules
joules

Having no natural predators increases population size, and populations can also be limited by predation. Given these facts, what does predation limit on a species among the following options: - Animal survival - Reproduction - the number of animals - genetic material - scarce resources - nutrients - grass - birds
the number of animals

Q: Viruses cause many human diseases, and some smallpox viruses are maintained in laboratories. Given these facts, what can smallpox cause among the following options: - contamination - harmful substances - vaccines - photosynthesis - extinction - cellular respiration - Destroy crops - human disease
A: human disease

Question: An animal usually requires a warm body temperature for survival, and warm blooded animals have a constant body temperature. Given these facts, animals usually require what for survival among the following options: - organic molecules - organic material - Fluctuating body temperature. - Ears - food and shelter - Cold blood - Organic compounds - Constant body temperature.
Answer: Constant body temperature.

*Question*
Shelter is used for protection by animals against weather, and many animals use sponges for shelter. Given these facts, what can animals use for protection among the following options: - hair - bushes - keratin - food - shells - appendages - energy - sponges
**Answer**
sponges

*Question*
Cells vary in size as well as shape, but all cells are very small, and bacteria are single-cell microorganisms that are so small they can only be seen with a microscope. Given these facts, cells vary in size and shape and can only be seen with what among the following options: - a microscope - heightened senses - a telescope lens - colors - Solar energy - by indirect light - a good eye - A computer
**Answer**
a microscope