Answer:
D. It's an example of evolution because the penguin ancestors changed over time.
Answer: pancreas- secretes enzymes
Gall bladder- stores bile
Liver:makes bile
Salivary glands: found in mouth
Explanation:
Liquid water, which is necessary for life as we know it, continues to exist on the surface of Earth because the planet is at a distance, known as the habitable zone, far enough from the Sun that it does not lose its water to the runaway greenhouse effect.
The sun--solar energy--is at the heart of the cycle of life, with all the sustenance relationships referred to as the food web. The sun is the ultimate source of energy for animals, but its energy must be harnessed by plants before it can be used by animals. Animals get energy by processing complex foods.
