The earth is composed of multiple, robust ecosystems.
o
o
true
false

TRUE, The earth is composed of multiple, robust ecosystems.

Explanation:

Planet Earth is a collection of multiple ecosystems. Ecosystems are broadly categorized into two types:-

Aquatic Ecosystem: These types of ecosystems are water-based which means that water is a part of these ecosystems. Aquatic ecosystems exist in water bodies like as oceans, rivers, etc.The major varieties of aquatic ecosystems are the Freshwater ecosystem and Marine ecosystem(salty water).

Terrestrial Ecosystem: These are types of ecosystems that are land-based which means that the living and non-living components of the ecosystem exist on landmasses such as , islands and continents etc. The major types of terrestrial ecosystems are the Forest ecosystem, Desert ecosystem, Grassland ecosystem, and Tundra ecosystem .