Which of the following is true about natural selection? a.) it occurs over many generations b.) it can always be observed within a single generation c.) it causes mutations to occur d.) it causes less useful traits to be passed to offspring

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The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.

They like garbage and they hunt during the night.