5. (i) What is food web? Tlustrate with the help of example,
(ii) (a) What is an ecosystem? List its two main components.
(6) We do not clean ponds or lakes, but an aquarium needs to be cleaned regularly,
explain. please answer

(I)

Explanation:

i. food web is a complex feeding structure, involving many food chain.

ii. a biological community of interacting organisms and their physical environment.

Two components are: Biotic(living things)and Abiotic(non-living things)

regulation of gene expression. gene expression can be regulated by various cellular processes with the aim to control the amount and nature of the expressed genes. these regulatory proteins bind to dna and send signals that indirectly control the rate of gene expression

explanation:

answer; i believe the correct answer to the above question is ( friction)