Answer: 1. Cambrian period, 5. rotation at the shoulder joint. 3. d. notochord, 4. d 2. d.
Explanation:
Rachel Carson's warning in silent spring was focused on : The misuse of pesticide
The book was published in 1962 and documented the effect of the use of pesticide to the environment
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A meander forms when moving water in a stream erodes the outer banks and widens its valley, and the inner part of the river has less energy and deposits silt. A stream of any volume may assume a meandering course, alternately eroding sediments from the outside of a bend and depositing them on the inside.
