Biology, 08.07.2019 13:50 aarhakhanna

Compare the productivity of terrestrial and aquatic ecosystems against the percent of earth’s surface area they occupy.

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The 6 terrestrial ecosystems are tundra, taiga, temperate deciduous forest, tropical rain forest, grassland, and desert, these are distinguished from aquatic ecosystem by the limited supply of water. The two types of aquatic ecosystems are marine and freshwater.

Terrestrial productivity is more effective in the wet tropical climates as the net primary productivity decreases between equatorial and polar regions due to less sunlight and therefore there is a temperature decrease. Global productivity is limited by factors of water and sun, as most ecosystems rely on photosynthesis and water. Marine productivity tends to be higher, as rivers and water carry more nutrients and deposit them in other ecosystems. The most productive regions are areas such as wetlands and estuaries. i hope this helps!

Answer from: namekianball4

Approximately 72% of Earth’s surface is covered by aquatic ecosystems, but they only account for supporting about 1/3 of the biosphere’s primary producers. This compares to terrestrial ecosystems which cover 28% of Earth’s surface yet account for the remaining 2/3 of the biosphere’s primary producers. Taken together this means terrestrial ecosystems are 5-6 times more productive than aquatic ecosystems per unit area.

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Answer from: Quest

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

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Answer from: Quest

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

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