Scientists communicate their results by publishing their work. What reasoning explains why this is important?
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Question 4
4.
Mercury Concentration
Mercury is a toxic chemical that accumulates in the tissues of animals in a food chain. The chart below shows mercury levels found in various commercial fish and shellfish.
Which statement is best supported by the data in the chart?
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1
Question 5
5.
The graph indicates that the energy used in photosynthesis is least likely obtained from which regions of the spectrum?
1 point
1
Question 6
6.
A small community that is heavily infested with mosquitoes was sprayed weekly with the insecticide DDT for several months. Daily counts providing information on mosquito population size are represented in the graph.
What is the most probably reason for the decreased effectiveness of the insecticide, DDT, on the mosquito population?