Answer:
2. The altitude of Polaris changes in a definite pattern as an observer's latitude changes.
Explanation:
Since Polaris is located over the Earth’s tilt of axis it appears to follow the observer's latitude. If you were to follow Polaris from the North Pole(0°) to the Equator (90°), it will make a half circle. This will prove that the earth has a spherical shape.
Answer:
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Explanation:
Leaves are colored by molecules called pigments. The pigment that causes leaves to be green is chlorophyll. Chlorophyll is important for plants to make food using sunlight. During spring and summer when there is plenty of sunlight, plants make a lot of chlorophyll.
In autumn when it starts to get cold, some plants stop making chlorophyll. Instead, those plants break down chlorophyll into smaller molecules. As chlorophyll goes away, other pigments start to show their colors. This is why leaves turn yellow or red in fall.
Sweeter because the product fructose is sweeter
Answer:
Amphibians skin is fully functional in blood production, and become anemic when the skin is covered by fungus. Amphibians have small lungs and use their skin for respiration (Cutaneous Respiration); they suffocate when the skin is covered with fungal growth.
