In: Biology
1. CO2 is accumulating in the atmosphere because: (You may select one or more answers)
a. The atmosphere is the largest pool of carbon
b. CO2 is not exchanged from the oceans to the atmosphere
c. Human activities
d. CH4 chemically reacts with NH3 in the atmosphere and is converted to CO2
e. NPP is higher than GPP in many ecosystems
2. Which of the following characteristics would be associated with a low R0 for a virus? (Choose 1 answer from each pair of options)
a. 1 Small host population density
b. 1 Large host population density
c. 2 Favorable parasite environmental conditions
d. 2 Unfavorable parasite environmental conditions
e. 3 Favorable vector environmental conditions
f. 3 Unfavorable vector environmental conditions
g. 4 Many people in the host population have had the parasite in the past
h. 4 Few people in the population have had the parasite in the past
i. 5 The host population has an evolutionary history with a similar parasite
j. 5 The population does not have an evolutionary history with a similar parasite.
3. Rank the marine biomes from those with the lowest rates of net primary production to those with the highest
a. Group of answer choices
b. upwelling regions
c. high latitude waters
d. subtropical gyres
e. continental shelf waters
f. Deep oceans
4. Rank the following from low to high based on the total contribution they make to the Earth’s average temperature?
a. Methane
b. Carbon Dioxide
c. Nitrous Oxide
d. Water Vapor
ANS (4)-Green house gases---> In the environment the gases that trap the heat emitted from the sun is called greenhouse gases. By trapping the amount of heat these gases lead to an increase in the temperature of the earth.
RANK ACCORDING TO THE CONTRIBUTION IN MAINTAINING EARTH AVERAGE TEMPERATURE | GREENHOUSE GASES | EXPLANATION FOR GASES |
1st (Highest contribution) | Water vapor | Water vapor came on the highest rank that contributes to maintaining the temperature of the earth, In the warming effect on earth, its contribution is highest at about 60%of total.. |
2nd(high after water vapor contribution ) | Carbon dioxide | Carbon dioxide came on 2nd rank, the emission of CO2 occurs because of the burning of fossil files such as coal and oil. In the warming effect on earth, its contribution is about 25%.less from water vapor. |
3rd(low contribution) | Methane | Methane came on 3rd rank, its emission occurs at the time of producing and transporting coal, natural gases, and oil, The majority of CO2 amount is absorbed by plants because of the carbon cycle.came after carbon dioxide. |
4th(Lowest contribution) | Nitrous oxide | Nitrous oxide came on 4th rank, its emission occurs at the time of industrial and agricultural activity in which fossil fuel and solid waste combustion occur and also the emission occurs at the time of wastewater treatments by the municipal corporation. It has the lowest contribution among these 4 greenhouse gases. |