Question

question 3
what percentage of the total energy is lost due to metabolism, heat, and waste between trophic levels in a food chain?
a 10%
b 20%
c 50%
d 90%
e 1%

question 4
the major determinants of climate are:
a temperature
b moisture
c sunlight
d all of these are correct

Explanation:

• Question 3: In an ecological food chain, the 10% rule states that only about 10% of energy is transferred from one trophic level to the next. This means 90% is lost (due to metabolism, heat, waste).
• Question 4: Temperature affects the rate of chemical reactions in ecosystems, moisture influences water - related biological processes (e.g., transpiration, precipitation patterns), and sunlight is the primary energy source for photosynthesis. All these factors are major determinants of climate as they influence weather patterns, biotic and abiotic interactions over long periods.

Answer:

• Question 3: D. 90%
• Question 4: D. All of these are correct