Answer:
Earth's tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere
Explanation:
Answer: The graph shows that chlorophyll a absorbs light principally around 420-450 nm and 650-680nm wavelengths
Explanation: Chlorophyll a is a pigment found in plants that traps light energy for use in photosynthesis. Chlorophyll a absorbs light mostly in the blue and orange-red wavelengths. This is shown in the graph, where the peaks are around the 400nm and 600nm wavelengths, corresponding to blue and red in visible light.
This absorption means the pigment is 'excited' by this light, sending into a higher state if energy which provides energy for the reactions of photosynthesis.
Answer:
Because of how genes change and how quickly they change, evolution is complicated. At the start of evolution, there shouldn't be a straight tree branch—it should be a twisted mess.
<span>This is because, people, generally,
have two kidneys and are also able to function properly with one functional
kidney. Therefore it is easier to perform kidney surgery without putting the patient’s
life at risk as compared to heart surgery. Everyone has one heart, a critical
organ whose surgery has to be well planned and done only if the risk of
not doing the surgery outweighs that of doing the surgery. </span>
