Answer:
Hydrogen and part oxygen
Explanation:
Water is composed of these two which makes the symbol H20
Answer:
Organisms respond to a signal called a stimulus.
Explanation:
Hello! The best answer would be C - Colds because bacteria can reproduce and spread rapidly, which is why a cold sometimes develops fast. As for the others, your body is just adjusting to the weather with A, B is a sexually transmitted disease which is caused from contact with another through sex, D is caused by sweets/certain foods that break down your teeth. I hope I helped you!! Have a great day!!
Answer:
Glucose circulates in the blood of animals as blood sugar. It is made during photosynthesis from water and carbon dioxide, using energy from sunlight. It is the most important source of energy for cellular respiration.
Explanation:
Glucose is formed in blood cells.
