There's been a lot of bad news for polar bears recently. In 2007, for example, scientists reported that if global warming continues unabated, the population could drop two-thirds by 2050.
Mutualism
Explanation: a relationship between two species of organisms in which both benefit from the association.
Answer: Option B) inability to digest proteins
Explanation:
The pancreas secretes trypsin, a proteolytic enzyme, that acts on proteins cleaving its peptide bonds, and eventually yielding peptones or polypeptides.
Thus, in the absence of pancreas protein digestion would be a problem
Answer:
The marine clamworm, Nereis, is carnivorous therefore its digestive system differs from that of the herbivorous earthworm, Lumbricus. The mouth and jaws are retractable (Figure 8, 9). If the jaws are retracted, cut along the midline of the pharynx and pull the jaws out with a pair of forceps.
Explanation:
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Answer:
Choose the correct label for each part of the experiment.
The plants that are under a UV light for eight hours
A. Experimental group
The amount of water that is given to all of the plants
D. controlled Variable
The plants that are under the light for six hours
B. Control Group
Explanation:
