Distinguish between biodegradable and non-biodegradable substances. List two effects of each of them on our environment.

(N/A)

Biodegradable substances	Non-biodegradable substances
$1$. Substances that are broken down by biological processes are called biodegradable.	$1$. Substances that are not broken down by biological processes are called non-biodegradable.
$2$. These substances are naturally recycled and do not accumulate in the environment.	$2$. These substances persist in the environment for a long time and require large dumping sites.

Effects of biodegradable substances:
$(1)$ During decomposition,they may release foul-smelling gases like methane and hydrogen sulphide.
$(2)$ If not managed properly,they can become breeding grounds for disease-causing microorganisms.
Effects of non-biodegradable substances:
$(1)$ They persist in the environment for a long time,leading to bioaccumulation and biomagnification in the food chain.
$(2)$ They cause long-term pollution of soil,air,and water,and occupy significant land space for disposal.