Answer:
When you pet a dog, your nerves send a signal to your brain of the soft, silky, warm fur of the dog. Your brain sends a signal back telling your arm to move up and down the dog. Your nerves feel the warmness and softness of his fur and send it to the brain. The brain relates this to other things and secretes hormones through glands which shows the pleasure.
Explanation:
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Answer:
producers to secondary consumers
The Ordovician is best known for its diverse marine invertebrates, including graptolites, trilobites, brachiopods, and the conodonts (early vertebrates). A typical marine community consisted of these animals, plus red and green algae, primitive fish, cephalopods, corals, crinoids, and gastropod
The re-radiated light from the earth's surface has a higher wavelength (and lower frequency) compared to the light hitting the earth’s surface from the sun. This is because the re-radiated light is usually in the infrared spectrum (which has lower energy) while that striking the earth is majorly visible and UV light (which has higher energy in comparison).