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  1. Problems
  2. /Ecology and Environment

Ecology and Environment

Biology
+ Upload a Problem
Subtopic
20 problems
Exam:
Type:
1.
A school canteen makes 18 kg of kitchen waste on each of 22 school days in a month… New
High School (9–10), General · Pollution and ConservationStemPy LabStemPy Lab
Hard
2.
Put each item into the green bin (wet waste) or the blue bin (dry waste): onion peels, a milk… New
High School (9–10), General · Pollution and ConservationStemPy LabStemPy Lab
Easy
3.
A railway once planned to serve all tea in kulhads instead of plastic cups… New
High School (9–10), General · Pollution and ConservationStemPy LabStemPy Lab
Medium
4.
A family of 5 throws away about 380 g of garbage per person each day… New
High School (9–10), General · Pollution and ConservationStemPy LabStemPy Lab
Medium
5.
A town throws away 2400 kg of waste each day, and 55 % of it is biodegradable… New
High School (9–10), General · Pollution and ConservationStemPy LabStemPy Lab
Medium
6.
A cotton shirt buried in soil is gone in a few months, but a plastic bag buried beside it is still… New
High School (9–10), General · Pollution and ConservationStemPy LabStemPy Lab
Medium
7.
Rina empties her dustbin: mango peels, a newspaper, a chips packet, a broken glass, a cotton… New
High School (9–10), General · Pollution and ConservationStemPy LabStemPy Lab
Easy
8.
Name two uses of CFCs that harmed the ozone layer… New
High School (9–10), General · Pollution and ConservationStemPy LabStemPy Lab
Medium
9.
In a small region of the upper atmosphere, ultraviolet light splits 45 oxygen molecules… New
High School (9–10), General · Pollution and ConservationStemPy LabStemPy Lab
Medium
10.
Anil says that ozone and the oxygen we breathe are the same gas… New
High School (9–10), General · Pollution and ConservationStemPy LabStemPy Lab
Easy
11.
A pesticide washes into a lake from nearby farms… New
High School (9–10), General · Ecosystems and Food ChainsStemPy LabStemPy Lab
Hard
12.
Kiran says a food chain could easily have six or seven levels if the top animals were small… New
High School (9–10), General · Ecosystems and Food ChainsStemPy LabStemPy Lab
Medium
13.
A field of wheat stores 500 000 kJ of food energy… New
High School (9–10), General · Ecosystems and Food ChainsStemPy LabStemPy Lab
Hard
14.
In a sea food chain, phytoplankton store 20 000 kJ of energy… New
High School (9–10), General · Ecosystems and Food ChainsStemPy LabStemPy Lab
Easy
15.
A meadow has 3000 plants. Each hare needs 30 plants to live, and each wolf needs 20 hares… New
High School (9–10), General · Ecosystems and Food ChainsStemPy LabStemPy Lab
Medium
16.
In a paddy field, frogs eat insects that feed on rice, and snakes eat the frogs… New
High School (9–10), General · Ecosystems and Food ChainsStemPy LabStemPy Lab
Medium
17.
Arrange these into a food chain and give the trophic level of each: snake, grass, eagle… New
High School (9–10), General · Ecosystems and Food ChainsStemPy LabStemPy Lab
Easy
18.
Priya leaves 50 kg of grass clippings on a corner of her lawn… New
High School (9–10), General · Ecosystems and Food ChainsStemPy LabStemPy Lab
Medium
19.
Sort these parts of a pond into abiotic components, producers, consumers and decomposers: water… New
High School (9–10), General · Ecosystems and Food ChainsStemPy LabStemPy Lab
Easy
20.
Rohan keeps fish in a glass aquarium and has to clean it every week… New
High School (9–10), General · Ecosystems and Food ChainsStemPy LabStemPy Lab
Easy