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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Answer: a (weak) acid
Explanation: the solutions are mostly neutral but the pH shown by the indicator as a bright blue means it is slightly acidic meaning the pH is between 6 and 7.6
Answer:
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Explanation:
A molecular clock determines evolutionary relatedness by examining how many mutations or random changes in DNA, there are between two organisms. When we map the relatedness of different organisms, we are creating a phylogenetic tree. At some point, all organisms that are alive today shared a common ancestor.
A faulty conus arteriosus would compromise on an effective gaseous exchange that keeps the blood of the
fish oxygenated for respiration of
tissues. The conus arteriosus is one of two accessory chambers found in most
fish with two-chambered hearts. The primary function of the conus arteriosus is
to prevent the backflow of blood and keep a steady flow of blood into the
ventral aorta and the gills.
Migraines are frequent intense aches of the head of neck
that are not caused by another physical disorder. Severe pain may usually be
felt on either one side or both sides of the head. Pain usually is felt in the temples.
Migraine could last for hours or couple of days.
