it happens by genetic mutation and slow evolution. imagine yourself an animal that can eat grapes and apple's, some of these animals like grapes better then apples and start eating more apples, while others do it the other way around. maby one day, one of the grape eaters has a genetic mutation allowing it to gain more energy from eating grapes then from apples, making the animal more of a specialist now, during the course of century's or millenia this difference can grow until the apple eaters and grape eaters wont mate anymore. at this point there are two species who have originated from just one, and because they don't mate anymore, genetic drift might change appearances or other aspects so they become not only dietary distinct but also visually distinct.
Unicellular plants and animals were first forms of life on Earth
Heterotrophs are organisms that feed on other life forms. Animals are heterotrophs. Animals that eat other animals are carnivores.
plants and animals need each other to survive.
Vent animals like limpets, clams, and mussels feed soley on bacteria. Other animals depend on sunlight to live and vent animals do not get sunlight.
The smallest membrane bound unit of life forms tissue in plants and animals is called is the cell.
yes there is other life forms because once they found frozen water on mars and water means life and we cant be the only life forms in the whole universe or Galaxy and there might be other universes to
It forms the base of the food pyramid; therefore, it supports the life of almost all other marine animals. Some animals eat the plankton, other animals eat those animals, and so on. If there were no plankton, the animals would die out.
Reproduction in an innate behavior in all forms of life.
Earth's scientist have not found life on other planets to date.
Invertibrates are animals and insects withuot a backbone.
Chicka Chicka Bang Bang
The alternation of generations is the presence of two different life forms in the life cycles. Some animals that undergo this are invertebrates such as insects and crustaceans.