Science
Which of the following human activities has resulted in an increase of non-biodegradable substances?
options
- Organic farming
- Increase in tree plantation
- Use of plastic as packaging material
- Composting of kitchen waste
Answer
Use of plastic as packaging material
Reason — Plastics are non-biodegradable substances, which means they cannot be decomposed by natural microorganisms. When plastics are widely used for packaging materials, they accumulate in the environment and remain there for many years without breaking down. This leads to soil, water and air pollution, harms animals that may swallow plastic waste and disturbs natural ecosystems.
On the other hand, activities like organic farming, tree plantation and composting of kitchen waste are environmentally friendly practices that promote the recycling of natural materials and do not contribute to non-biodegradable pollution.
Therefore, the use of plastic as packaging material is the main human activity responsible for the increase in non-biodegradable substances in the environment.
Related Questions
In a cross between black furred rabbit (B) and white furred rabbit (b), all offspring were found to have black fur. What can be inferred about the genetic makeup of the parent rabbits?
options
- BB X bb
- Bb X Bb
- Bb X bb
- bb X bb
Which are the correct statements related to ozone?
(a) Ozone layer helps in increasing the UV radiations reaching earth.
(b) Ozone is a deadly poison.
(c) Ozone layer shields the earth from UV radiations.
(d) Ozone layer prevents UV rays which cause skin cancer.
(e) Ozone is formed with the help of Chloroflurocarbons.
options
- (a), (b), (c)
- (b), (c), (d)
- (c), (d), (e)
- (a), (d), (e)
Assertion (A) : Tallness of a pea plant is controlled by an enzyme.
Reason (R) : The gene for that enzyme makes proteins which help the plant to be tall.
options
- Both A and R are true, and R is the correct explanation of A.
- Both A and R are true, and R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A) : Vulture will always have the least amount of pesticides in a food chain.
Reason (R) : Vulture occupies the last trophic level and it gets only 10% of energy of the previous trophic level.
options
- Both A and R are true, and R is the correct explanation of A.
- Both A and R are true, and R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.