After a mass extinction event, new species evolve and fill ecological niches left extinct species. What is this process called, and what is an example of this process?

First a single best adapted would not be the best adapted species. Organisms must live in balance with their environment which includes other organisms. A single species would soon go...

The predators are important because they keep the prey in line. Otherwise, the prey, generally herbivores, eat up all the plants like seaweed, which everything depends on. This results in...

Jaguar, for example is a keystone species in south and central America's jungles. It is an important predator of rainforest; by hunting various animals it controls their population size...

All living beings, plant or animal, need a suitable environment to survive. This includes temperature, atmosphere, and surroundings conducive to their being able to obtain food, grow, shelter against hostile...

As of right now, the science community agrees that Earth is losing far more species per year than are being formed. Approximately 50,000 species are being lost each year. This...

An example is the Galapagos Island. Like what might happen after a mass extinction removed most living things, the Island were formed by volcanic action with no living things. Both...

have one purpose, replication. Viruses are considered obligate parasites, this means that viruses need a host to replicate (viruses essentially hijack the host cell's metabolic processes and use it...

Nature is the best maintainer and sustainer. however those which go endangered due to human activities would have impact on nature.

The common eastern gray squirrel which is present is huge numbers in Britain is one which definitely for us Brits gets on our nerves a lot. This is due to...

Due to Interspecefic competition for food , place etc