(b) Biodegradable substances can be broken down into simpler harmless substances in nature by microorganisms whereas non-biodegradable substances cannot be broken down into simpler harmless substances in nature.
(b) Biodegradable substances can be broken down into simpler harmless substances in nature by microorganisms whereas non-biodegradable substances cannot be broken down into simpler harmless substances in nature.
The difference between biodegradable and nonbiodegradable substances is
(b) Biodegradable substances can be broken down into simpler harmless substances in nature by microorganisms whereas non-biodegradable substances cannot be broken down into simpler harmless substances in nature.
(b) Biodegradable substances can be broken down into simpler harmless substances in nature by microorganisms whereas non-biodegradable substances cannot be broken down into simpler harmless substances in nature.
See lessOne of the best solutions to get rid of non-biodegradable wastes is……………….
(b) recycling
(b) recycling
See lessIn the garden ecosystem, which of the following are producers?
(c) Grasses
(c) Grasses
See lessWhich of the following is a logical sequence of food chain
(a) producer → consumer → decomposer
(a) producer → consumer → decomposer
See lessFirst link in any food chain is usually green plants because
(c) they alone have the capacity to synthesise food using sunlight
(c) they alone have the capacity to synthesise food using sunlight
See lessInterdependence of organisms on other organisms for their sustenance is described as
(b) Food chain
(b) Food chain
See lessThe two basic processes that operate in an ecosystem are
(a) Material cycling, energy flows
(a) Material cycling, energy flows
See lessName one non-biodegradable waste which may pollute the earth to dangerous levels of toxicity, if not handled properly
(d) Radioactive substances
(d) Radioactive substances
See lessWhich one of the following will undergo fastest bio-degradation
(d) Mango pulp
(d) Mango pulp
See lessWhich of the following is non-biodegradable
(b) Nylon
(b) Nylon
See less