Briefly explain the overall processes of photosynthesis and cellular respiration. Include a brief explanation of autotrophs and heterotrophs in your answer
What will be an ideal response?
Photosynthesis is performed by autotrophs. In photosynthesis, light energy is converted into chemical energy (stored within the bonds of glucose). Water and carbon dioxide are consumed, and oxygen is released. In most autotrophs, photosynthesis occurs in the chloroplasts. Cellular respiration represents the reverse chemical process. It is performed by both autotrophs and heterotrophs to meet their energy needs. In cellular respiration, oxygen is consumed and the bonds of glucose are broken to release energy, much of which is then used for work within the cell. Along with the energy, carbon dioxide and water are end products, and heat is produced. In most autotrophs and heterotrophs, cellular respiration takes place in organelles called mitochondria.
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Of the following greenhouse gases, ________ concentrations have increased the most since 1750
A) nitrous oxide B) carbon dioxide C) ozone D) water vapor E) methane
List at least three volcanic hazards other than pyroclastic flows and lahars
What will be an ideal response?
Subtropical waters are typically more saline than equatorial waters because of
A. high evaporation, high precipitation. B. high evaporation, low precipitation. C. low evaporation, high precipitation. D. low evaporation, low precipitation.
The key reason we should care about recovery of the southern sea otter population is
a. the fact that they are a keystone species b. their charismatic personality, which makes them pleasant to observe c. because they are a food source for humans d. because they are a food source for tuna, which is a food source for humans e. the fact that they are a keystone species and because they are a food source for tuna