Ejaculation occurs when muscle contractions propel sperm from the epididymes, and ejaculation is the expulsion of semen. Given these facts, the expulsion of semen occurs when what propels sperm from the epididymes among the following options: - birth - muscle contractions - kinetic energy - urine - rapid expansion - air - heat produced - matter vibrating
muscle contractions

Thyroid hormones increase the rate of metabolism in cells throughout the body, and thyroid hormone is made by the thyroid gland. Given these facts, what increases metabolism in cells throughout the body among the following options: - lymph nodes - aerobic capacity - puberty - thyroid gland - Smoking - smoking cigarettes - cells - heat energy
thyroid gland

Q: Soil is formed by rocks eroding, and examples of such rock include sandstone and shale . Given these facts, what forms soil among the following options: - Earthworms - single-celled organisms - an external framework - space travel - most organisms - sandstone eroding - water freezing - ice forming
A: sandstone eroding

Question: Refracting sunlight causes sunlight to split into different colors, and light passing through a prism is refracted or divided into the colors of the spectrum. Given these facts, sunlight passing though a prism is split into among the following options: - coronal discharge - heat energy - energy - small bits of matter - Energy. - neutrinoes - a spectrum - white
Answer: a spectrum

*Question*
Arefrigerator is used for keeping food fresh for a long period of time, and refrigeration slows the growth of bacteria, molds, and other micro-organisms. Given these facts, what does slowing the growth of bacteria do for a food among the following options: - It remains dormant - survive - It decreases - Keeps it warm - Makes it taste worse - Makes it go bad quicker - Keeps it fresh - Cooking
**Answer**
Keeps it fresh

(Q).
When the body is hot , sweat is produced to cool the body, and exercise, fever, and heat cause the body's temperature to rise. Given these facts, what causes sweat to be produced to cool a person down among the following options: - exercise and fever - wool pants - the sun - Movement of an air mass - shooting stars - Evaporation - centralized nervous system - water vapor
(A).
exercise and fever