Give examples of the struggle for existence from the life of plants and animals. What is its significance?

The struggle for existence is part of Darwin’s theory of evolution. There is an intraspecific interspecific struggle. An example of intraspecific struggle among animals is the competition among rabbit cubs for survival: a weak and sick cub can die. An example of interspecies struggle can be predation: a lion hunts a zebra, and this is where the struggle for survival manifests itself.

In plants, the intraspecific struggle is manifested in the competition for light in the forest: the most extensive and tallest tree receives more sunlight. Interspecies: parasites eat a diseased tree.