The sun! It's solar radiation heats our planet, gives us light, and sustains life.
Hello!
To solve this problem you need to use the following equation for heat transfer to calculate the heat added (Q) and substitute in this equation the values for specific heat (c), mass (m) and temperature difference (ΔT). The following equation describes the heat needed to raise the temperature of a given object:

:
So, to heat the cafeteria fork made of iron with a mass of 20 grams from 25 °C to 75°C, you'll need
121 cal of heat energy.
Answer: Natural selection can act on traits determined by alternative alleles of a single gene ... hope this helps, this is one of many answers for this question!
Answer:
D
Explanation:
It not that appropriate since even concentrared substances have water but based on the current answers it's D