Answer:
Observing and counting bird populations
Explanation:
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The parts of the central nervous system (CNS) include only the following:
Most of the other parts we associate with the nervous system are part of the PNS, or the peripheral nervous system.
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Correct answer: B). With fewer contractions
The main function of a contractile vacuole is to maintain the sufficient amount of water in the protoplasm of the cell. For the freshwater amoeba contractile vacuole is needed to pump water and maintain a osmoregulation.
But when it is kept in sea water, more contraction is required to expel the water out of the cell in order to make the environment inside amoeba same as of sea water.
The outer coverings that are tough but, flexible provided protection to the land plants.
Energy produced by the various process of respiration stored in the form of ATP within the tissues
