Q: Nitrogen is an important macronutrient because it is part of nucleic acids and proteins. atmospheric nitrogen, which is the diatomic molecule n2, or dinitrogen, is the largest pool of nitrogen in these? Choices: - gas planets - desert biomes - aquatic ecosytems - terrestrial ecosystems A:
terrestrial ecosystems

Q: During birth, a baby passes from the uterus through what organ to leave the body? Choices: - Ovary - the urethra - Esophagus - the vagina A:
the vagina

Q: Q: Blood enters the kidney through the which artery? Choices: - cardiac artery - vas deferens - jugular - renal artery A:
A: renal artery

Question: Q: When you are walking on a sidewalk, what occurs between your shoes and the concrete each time you put down your foot? Choices: - movement - progress - grip - static friction A:
Answer: static friction

*Question*
Q: What stage in human males lasts from about ages 12 to 18 years and is controlled by hormones? Choices: - childhood - adolescence - maturity - puberty A:
**Answer**
puberty

Q: Q: What is the causative agent of sleeping sickness in humans? Choices: - pseudomonas asplenii - escherichia coli - bacillus aerophilus - trypanosoma brucei A:
A: trypanosoma brucei