Get premium membership and access revision papers with marking schemes, video lessons and live classes.
  OR
Processing. Please wait.

 Form 3 Biology questions and answers on ecology

(a) State three effects of dumping untreated sewage into a river.
(b) Name one process that is responsible for loss of
energy from one trophic level to the next.

 (1m 2s)
831 Views     SHARE

Download as pdf file

Answer Text:
(a) - Leads to eutrophication
- Kills organisms in water
- Causes water borne diseases for example, cholera
- Changes the water PH

(b) - Respiration
- Defecation
- Excretion


|