Biodiversity refers to the variety of life on Earth, including the different species of plants, animals, and microorganisms, as well as the genetic variation within each species.

A forest is an example of a terrestrial ecosystem, which is an ecosystem that exists on land.

Ecology is the study of the interactions between living organisms and their physical environment.

Sea otters are an example of a keystone species, which is a species that has a disproportionately large impact on its ecosystem relative to its abundance.

A food web is a complex network of interconnected food chains, showing how energy and nutrients flow through an ecosystem.

Grass is an example of a producer organism, which is an organism that can produce its own food through photosynthesis or chemosynthesis.

Natural selection is the process by which organisms adapt to their environment over time, resulting in the survival and reproduction of individuals with favorable traits.

The giant panda is an example of a threatened species, which is a species that is at risk of extinction.

Anthropogenic change refers to the process by which humans modify the natural environment, often through activities such as deforestation, pollution, and climate change.

Solar energy is an example of a renewable resource, which is a resource that can be replenished naturally.

Resilience refers to the ability of ecosystems to recover from disturbances and maintain their structure and function.

Fossil fuels are an example of a non-renewable resource, which is a resource that cannot be replenished naturally.

Speciation is the process by which species evolve and become distinct from one another, resulting in the formation of new species.

The relationship between a shark and a remora is an example of a mutualistic relationship, where both species benefit from the interaction.

Competition is the process by which organisms compete for resources in an ecosystem, such as food, water, and territory.