Which of these locations on earth experiences at least change in the number of daylight hours throughout the year?
a. north pole
b. terrestrial equator
c. tropic of capricorn
d. tropic of cancer e) south pole

An atom of nitrogen had seven protons in its nucleus. how many electrons does it have

4the indian leaf butterfly has traits that allow it to resemble a leaf. the bright colors of the monarch butterfly indicate that the butterfly tastes bad and can be poisonous. how does the appearance of these butterflies them to survive? f the indian leaf butterfly is able to avoid predators while the monarch butterfly warns predators away. g. the indian leaf butterfly frightens predators away while the monarch butterfly poisons predators before they can eat it. h both butterflies rely on camouflage to avoid predation. j both butterflies cooperate with one another to avoid predation.

1. the is the thinnest part of the earth. 2. the is the thickest part of the earth. 3. what metals are mentioned in the text?