Answer:
A) Hummingbirds drinking nectar from a plant.
Step-by-step explanation:
Here are some examples of natural selection: In a habitat there are red bugs and green bugs. The birds prefer the taste of the red bugs, so soon there are many green bugs and few red bugs. The green bugs reproduce and make more green bugs and eventually there are no more red bugs.
Hey there!
In your body, you have 46 pairs of chromosomes, which make up you! 23 come from your mom, and 23 come from your dad, and they give you traits from each of your parents because of heredity.
Hope this helps!
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Answer: <u><em>
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Explanation:
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Climate change is the greatest global threat to coral reef ecosystems. Scientific evidence now clearly indicates that the Earth's atmosphere and ocean are warming, and that these changes are primarily due to greenhouse gases derived from human activities.
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As temperatures rise, mass coral bleaching events and infectious disease outbreaks are becoming more frequent. Additionally, carbon dioxide absorbed into the ocean from the atmosphere has already begun to reduce calcification rates in reef-building and reef-associated organisms by altering seawater chemistry through decreases in pH. This process is called ocean acidification.
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Climate change will affect coral reef ecosystems, through sea level rise, changes to the frequency and intensity of tropical storms, and altered ocean circulation patterns. When combined, all of these impacts dramatically alter ecosystem function, as well as the goods and services coral reef ecosystems provide to people around the globe.
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<span>I found the whole exercise on the internet and R=0.903.
According to mathematics, the variability in potassium can be explained by the amount of fibre that the servings contain. By doing </span>

we find that fraction.

=0.8154
Answer:
Sweat glands
Explanation:
Humans sweat to cool down their bodies after an excess workout or activity.