Answer:
C. proteins provide structural functions for the body.
Explanation:
Proteins play a key role in the healthy of animals such as building and repairing muscles and other body tissues of the animal, it is needed to form new skin cells, grow hair, build muscle tissue etc.
Fossil evidence suggests that the tiktaalik had lungs, which meant that it could breathe in air, instead of just water.
This trait allowed the tiktaalik to survive despite the low oxygen content of the shallow water because the tiktaalik would simply get its oxygen from the air. This selective advantage was passed on to the tiktaalik's offspring and over time, more amphibious creatures evolved with the ability to survive both on land and in water.
Answer:
Yes, photosynthesis is a chemical change
Explanation:
Photosynthesis is the process through which plants convert light energy into chemical energy. Here is the chemical reaction involved: water and carbon dioxide combine to form glucose and oxygen. Since new chemical species are formed, photosynthesis is clearly a chemical change.
Answer:
Pretty sure it's Winter.
Explanation:
Tilted away from the Sun.