Answer the following question given this paragraph: An online guide from the University of Illinois about air masses and fronts is found here: http://ww2010. atmos. uiuc. edu/%28Gh%29/guides/mtr/af/home. rxml . Q: What is essential for cellular respiration for all aerobic organisms? Choices: - nitrogen - water - carbon - oxygen A:
oxygen
(Question)
Answer the following question given this paragraph: Values of specific heat must generally be looked up in tables, because there is no simple way to calculate them. In general, the specific heat also depends on the temperature. Table 14.1 lists representative values of specific heat for various substances. Except for gases, the temperature and volume dependence of the specific heat of most substances is weak. We see from this table that the specific heat of water is five times that of glass and ten times that of iron, which means that it takes five times as much heat to raise the temperature of water the same amount as for glass and ten times as much heat to raise the temperature of water as for iron. In fact, water has one of the largest specific heats of any material, which is important for sustaining life on Earth. Q: Why must values of specific heat be looked up in tables? Choices: - lack of formulas - difficult to memorize - difficult to understand - difficult to calculate A:
(Answer)
difficult to calculate
Ques: Answer the following question given this paragraph: With less energy at higher trophic levels, there are usually fewer organisms as well. Organisms tend to be larger in size at higher trophic levels, but their smaller numbers result in less biomass. Biomass is the total mass of organisms at a trophic level. The decrease in biomass from lower to higher levels is also represented by Figure above . Q: Organisms tend to be larger in size at higher what levels? Choices: - proteolytic - benthic - Secondary Layer - trophic A:
Ans: trophic
(Q).
Answer the following question given this paragraph: Q: Which blood leaves the placenta through veins leading back to the fetus? Choices: - immunity - molecular - pelvic - fetal A:
(A).
fetal
Ques:Answer the following question given this paragraph: Force and electric field are vectors and thus have direction as well as their value. Q: Because force and electric field are what, they have direction as well as their value? Choices: - sensors - neurons - mass - vectors A:

Ans:vectors
Ques:Answer the following question given this paragraph: Water, carbon dioxide, and oxygen are important agents of chemical weathering. Q: Water, carbon dioxide, and what other element are important agents of chemical weathering? Choices: - helium - methane - sulfur - oxygen A:

Ans:
oxygen