The natural disasters branch of earthe science. The
The correct answer is: sea stars
All animals listed above are invertebrates. One of the characteristic of invertebrates are that they are protostomes with the exception of Echinodermata (sea stars). The difference between protostomes and deuterostomes is in their embryonic development (orgin of mouth and anus).
In protostomes the mouth forms first: the oral end of the animal develops from the first developmental opening. On the other hand in deuterostomes the first opening (the blastopore) becomes the anus, and the oral end of the develops from the second opening.
Humans are also deuterostomes.
Answer:
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Explanation:
gene flow is a movement of the genes in or out of population. This movement can be caused by the migration of organisms that reproduce in the populations. Or the movements of the gametes
Answer:
the average annual rainfall.
Explanation:
It is defined as the annual amount of precipitation for a location over a year.
Fresh water community obtained its storage as precipitation from the atmosphere of rain, mist and snow..
The amount of rainfall of a community depends on the location.A typical rain forest receives average of 50,- 260 inches of rain per year.
1. The wavelength is the ratio of the wave's speed to its frequency in hertz or 1/s. This is shown below,
λ = s / f = (320 m/s) / (300 1/s) = 1.07 m
The wavelength is approximately 1.07 m.
2. The frequency is the ratio between speed and the wavelength,
f = (330 m/s) / 0.45 m = 733.33 hertz
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