The sun
The energy source is the sun. Plants use solar energy to produce the foods they need for growth. Animals feed on the plants or feed on animals that eat plants.
The sugar made during photosynthesis is important to both plants and animals because it is a source of energy. Sugar is stored in plants or the bodies of animals until it is needed and then converted to an energy.
Plants,animals,water
it is not renewable
That's photosynthesis. (There's a clue in the "categories".)
ATP is an immediate source of energy for animals and all living things.
because plants need it for energy and we eat plants. plants are basic energy source we need the energy when it's transferred from one source to another
Only plants can be autotrophic (using light or chemical energy as their energy source). Animals are all heterotrophic.
Only as an energy source, it requires amino acids for animals to make proteins.
The sun its so simple
Petroleum is called a fossil fuel because it was made from the remains of plants. The energy in petroleum came from the energy in the plants and animals.
Ducks are one of the animals that eat arrowhead plants. This is an important food source for the duck.