Caring for the environment

Tests: 7 of 12 right · Exam: 3 of 4 right · Kind: plain · Understood: 11 of 16 · Run: 2026-10-18, commit f3c23ea72

Lesson 57 of the world course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: the lesson in the corpora.

Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: the lesson's questions in the corpora.

Test 1 · wrong ✗

A family starts buying loose fruit instead of fruit packed in plastic trays. Which of the three Rs is this?

1. Reuse — ← Mova's choice · no support
2. Repair — no support
3. Reduce — ✓ the right answer · no support
4. Recycle — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 2 · right ✓

Why is it a good idea to recycle aluminium cans rather than make new ones?

1. Recycled cans are heavier and stronger — no support
2. It makes cans break down faster — no support
3. New cans are made of plastic — no support
4. Recycling saves most of the energy needed to make new metal — ← Mova's choice · ✓ the right answer · score 6

Why: It took the question to ask why something happens (its cause). It chose option 4 with score 6, the only option with support. Its support: lesson 56, line 6: «Energy is needed to make anything move, heat up, light up or grow.», reached through a sentence linked to the one the question matched. What matched: the same action «need» (+2); the same thing acted on «energy» (+2); its «because» matches the remembered cause (+2). · the question and its options parsed, with trees and pragmatics

Test 3 · right ✓

A family sorts its rubbish. Where should a newspaper go?

1. Into the paper recycling — ← Mova's choice · ✓ the right answer · no support
2. Into the river — no support
3. Onto a bonfire — no support
4. Into the compost heap with meat — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 4 · right ✓

Litter on a beach is carried away by the tide. What could happen next?

1. It becomes food for plants — no support
2. It disappears completely within a single day or two — no support
3. It turns into sand at once — no support
4. Sea animals may swallow it or get caught in it — ← Mova's choice · ✓ the right answer · score 2

Why: It took the question to ask what happens next. It chose option 4 with score 2, the only option with support. Its support: lesson 57, line 2: «Pollution is putting harmful things into the environment. Smoke from factories and cars dirties the air, waste and chemicals dirty rivers and seas, and litter…», reached through the option's own match among the sentences about the question's things. What matched: the same doer «animals» (+2); the same place «litter» (+1). Against it: a different action (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 5 · wrong ✗

Which is true about plastic?

1. Plastic breaks down quickly in the sea, in a few weeks — ← Mova's choice · score 5
2. Plastic cannot be recycled at all — score -2
3. Most plastic lasts for hundreds of years — ✓ the right answer · score 4
4. Plastic is made from fresh fruit — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 5, against 4 for the next best. Its support: lesson 57, line 8: «Plastic can take hundreds of years to break down.», reached through the remembered sentence the question matched. What matched: the same action «break down» (+3); the same doer «plastic» (+2). The right option, 3, scored 4. · the question and its options parsed, with trees and pragmatics

Test 6 · wrong ✗

A wetland where many birds nest is drained to build a car park. What is the main harm?

1. The air becomes cleaner — ← Mova's choice · no support
2. The birds get more food — no support
3. The birds lose their habitat — ✓ the right answer · no support
4. The car park will be too wet — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 7 · right ✓

Why does cutting down large forests harm the air?

1. Fewer trees are left to take in carbon dioxide — ← Mova's choice · ✓ the right answer · score 8
2. Forests stop the wind — no support
3. Trees make the air dirty — score 4
4. Cut trees release clean water that rains on cities — score 0

Why: It took the question to ask why something happens (its cause). It chose option 1 with score 8, against 4 for the next best. Its support: lesson 57, line 15: «Cutting down forests destroys habitats and removes trees that clean the air by taking in carbon dioxide.», reached through the cause of the sentence the question matched. What matched: the same thing acted on «carbon dioxide» (+5); the same action «take in» (+3). · the question and its options parsed, with trees and pragmatics

Test 8 · wrong ✗

What is the best thing to do with a sandwich wrapper if there is no bin nearby?

1. Drop it on the grass for the birds — ← Mova's choice · score 7
2. Hide it under a bush so it is out of sight — score 7
3. Carry it home and put it in a bin — ✓ the right answer · score 7
4. Throw it in a pond where nobody sees — score 7

Why: It took the question to ask what it is done to. It chose option 1 with score 7, tied with another option at 7 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 51, line 5: «Gravity is the pull of the Earth that makes things fall and gives them weight. Magnets pull on iron and steel, and they can pull or push other magnets without…», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+4); the same thing acted on «things» (+3). The right option, 3, scored 7. · the question and its options parsed, with trees and pragmatics

Test 9 · right ✓

why's plastic in the sea such a big deal

1. Plastic makes the water too salty — no support
2. Sea animals swallow it or get tangled, and it lasts for hundreds of years — ← Mova's choice · ✓ the right answer · score 4
3. Plastic melts into food for fish — no support
4. It only looks ugly on beaches — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 4, the only option with support. Its support: lesson 57, line 9: «Sea animals can swallow plastic or get tangled in it.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «sea animals» (+2); the same action «swallow» (+1); the same thing acted on «plastic» (+1). · the question and its options parsed, with trees and pragmatics

Test 10 · wrong ✗

chuck the apple core in the bin or what

1. Burn it on a bonfire along with plastic — ← Mova's choice · no support
2. Bury it in plastic bags — no support
3. Put it in compost to feed the soil — ✓ the right answer · no support
4. Throw it in the sea — no support

Why: Nothing it remembers matched the question, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 11 · right ✓

my sister says recycling is the best thing you can do about waste. true?

1. No, reducing helps most because the waste is never made — ← Mova's choice · ✓ the right answer · score 2
2. Yes, recycling beats everything — no support
3. Yes, reducing does nothing at all — no support
4. No, throwing away is best — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 2, the only option with support. Its support: lesson 57, line 11: «Reducing waste helps most, because the waste is never made.», reached through the option's own match among the sentences about the question's things. What matched: the same action «make» (+1); the same thing acted on «waste» (+1). · the question and its options parsed, with trees and pragmatics

Test 12 · right ✓

Jack reckons cutting forests only loses wood. right?

1. No, it makes more space for animals — no support
2. Yes, animals do not live in forests — no support
3. Yes, wood is all we lose — no support
4. No, it destroys habitats and removes trees that clean the air — ← Mova's choice · ✓ the right answer · score 10

Why: It took the question to ask which statement is true. It chose option 4 with score 10, the only option with support. Its support: lesson 57, line 15: «Cutting down forests destroys habitats and removes trees that clean the air by taking in carbon dioxide.», reached through the same lesson line as the sentence the question matched. What matched: the same action «clean» (+4); the same doer «trees» (+4); the same thing acted on «air» (+2). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Which of the following statements most accurately characterises pollution?

1. The natural decomposition of fallen leaves — ← Mova's choice · no support
2. Any material which is subsequently recycled — no support
3. The planting of trees upon cleared land — no support
4. Harmful material introduced into the air, water or soil — ✓ the right answer · no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · right ✓

Identify, among the practices of Reduce, Reuse and Recycle, that which is of the greatest benefit, together with the reason therefor.

1. Reuse, since objects are thereby destroyed — no support
2. Reduce, since the waste is never produced — ← Mova's choice · ✓ the right answer · score -1
3. Recycle, since it requires no energy — no support
4. Recycle, since every material may be remade — no support

Why: It took the question to ask which statement is true. It chose option 2 with score -1, the only option with support. Its support: lesson 57, line 10: «Reduce, Reuse and Recycle are three ways to make less waste.», reached through the option's own match among the sentences about the question's things. What matched: the same action «make» (+1); the same thing acted on «less waste» (+1). Against it: one says «not», the other does not (counts against) (-3). · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · right ✓

Select the response that is consistent with the established facts concerning the period required for the decomposition of plastic.

1. It is accomplished within a single season — no support
2. It is accomplished within a few days — no support
3. It may require hundreds of years — ← Mova's choice · ✓ the right answer · score 2
4. It never commences under any conditions — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 2, the only option with support. Its support: lesson 57, line 8: «Plastic can take hundreds of years to break down.», reached through the remembered sentence the question matched. What matched: the same action «take» (+3); the same thing acted on «hundreds» (+1). Against it: a different doer (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · right ✓

It is given that a forest is felled in its entirety. Determine the principal consequence for the wild creatures resident therein.

1. Their habitat is enlarged — no support
2. Their food supply is increased — no support
3. Their habitat is destroyed — ← Mova's choice · ✓ the right answer · score 6
4. Their number is necessarily augmented — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 6, the only option with support. Its support: lesson 57, line 15: «Cutting down forests destroys habitats and removes trees that clean the air by taking in carbon dioxide.», reached through the same lesson line as the sentence the question matched. What matched: the same action «destroy» (+4); the same thing acted on «habitats» (+2). · the question and its options parsed, with trees and pragmatics

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/world/57-environment/