What is meant by ecosystem, carrying capacity?

​(a) What  is meant by the following terms;     (2mks)

​(i) Ecosystem

A natural unit composed of abiotic and biotic factors whose instruction lead to a self sustaining system;

(ii) Carrying capacity

• ​The maximum population of a species that a particular habitat can support;

• ​Total no. of organisms a particular habitat/area/ecosystem/region/environment can support without depleting the resources;
• Total no. of population of a species in a given habitat/area/ecosystem/environment can support without depleting the resources.

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​(b) Give two ways on how hydrophytes are adapted to the process of gaseous exchange     (2mks)

• Floating hydrophytes have numerous and large stomata on the upper epidermis;
• Have aerenchyma tissues in their stems/leaves/roots to store air and for gaseous exchange;
• Those in swampy environments have pneumatophods breathing roots;