Oxygen, liquid water, and life is on planet earth
Ice is less densw than water (a)
The substances which are less dense than water float on water
There are 3 sources of energy, which are also known as macronutrients ,carbohydrates, protein, and fat.
Of these three, carbohydrates are the body’s preferred source of energy. Carbohydrates break down into glucose, which is an immediate source of energy especially for the brain and muscles. The macronutrient proportions recommended for general, healthy diet are: 45-65% of energy (or calories) from carbohydrates, 10-20% of energy (or calories) from protein and 20-35% of energy (or calories) from fat.
Photosynthesis is the process by which plants make their own foods, without this process the plants would die.
Carbon atoms can form 4 covalent bonds.