I believe the polysaccharide that provides rigidity and strength in plants would be cellulose. As this is one of the essential components found in the cell wall of plant cells.
Answer:
A step that is not part of natural selection is people select which individuals breed and which ones do not.
Explanation:
Natural selection is a process in which favorable or unfavorable environmental conditions determine the evolution of species, producing differences in their genotype over a long period of time.
As its name indicates, it is a natural selection, in which no intervention by people is contemplated, so that <u>people cannot determine which individuals breed</u>.
Natural selection implies that the characteristics on which the environment influences are inheritable, that there is genetic variability in the population and that the variability of these characteristics implies the ease of reproduction and survival capacity.
<em>The other options do form part of natural selection, since they are based on the three premises of this process:
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- <em>Inheritable characteristics.
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- <em>Genetic variability.
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- <em>The variability of characteristics influences reproduction and survival.</em>
A woodcutter could justify cutting trees for use say in a pioneering situation whereby the pioneer needs shelter and food so trees could be necessary to say construct a small log cabin and table for eating/preparing food at to ensure the survival of the pioneer.
Answer:
Option B and E and D
Explanation:
Technological advancement has led to growth of industries and manufacturing units and hence the net production of goods. This has led to the use of natural resources and release of pollution of all forms. Environmental research leads to intrusion into niche habitats and hence causes its destruction.
Option B, D and E are correct
The frogs can get hurt by jumping to the feet
