Answer:
when you look a streetlight from far it will be some how not bright. the other stars are far from planet earth . but the sun is near
Explanation:
C.all mammal descended from a common ancestor.
Answer:cacti
Explanation:
In an ecosystem,the ultimate source of energy is the sun. Plants take up this energy from the sun to produce food. Animals eats up plants and when they die ,they decompose. This continuing process leads to the transfer of energy from one trophic level to another in the ecosystem.
Plants ,algae and some bacteria are the primary producers in the ecosystem.they are able to make their own food and support the entire living system. They extract inorganic nutrients and energy from the environment, in order to make their food. Animals(herbivores) eats up the plants and other animals(carnivores) eat up such animals. This situation sets up a chain of flow of energy from the producer to the consumer and back to the environment.
The part of the nervous system that is similar to the autopilot is the AUTONOMIC NERVOUS SYSTEM. It controls the muscles and the glands of the internal organs. It is divided into sympathetic and parasympathetic. The sympathetic autonomic nervous system brings about excitation in the body while the parasympathetic brings about calmness.
