---
title: Why would a polar bear struggle to live in a tropical forest? — Climate zones · tree and pragmatics
description: Why would a polar bear struggle to live in a tropical forest? Test 8 of lesson 16 «Climate zones» of the world course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Test 8 · Climate zones

<!-- .ven lang=en -->
Why would a polar bear struggle to live in a tropical forest?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **What happens:** live · **To what, where:** tropical forest

<!-- .vabout -->
This is test 8 of lesson 16 «Climate zones» of the world course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/world/16-climate-zones/#t8).

## The question {#question}

```conllu
# sent_id = question:world:16-climate-zones:t8:1
# text = Why would a polar bear struggle to live in a tropical forest?
1	Why	why	ADV	WRB	PronType=Int	6	advmod	_	_
2	would	would	AUX	MD	VerbForm=Fin	6	aux	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
4	polar	polar	ADJ	JJ	Degree=Pos	6	amod	_	_
5	bear	bear	NOUN	NN	Number=Sing	6	compound	_	_
6	struggle	struggle	NOUN	NN	Number=Sing	0	root	_	_
7	to	to	PART	TO	_	8	mark	_	_
8	live	live	VERB	VB	VerbForm=Inf	6	acl	_	_
9	in	in	ADP	IN	_	12	case	_	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
11	tropical	tropical	ADJ	JJ	Degree=Pos	12	amod	_	_
12	forest	forest	NOUN	NN	Number=Sing	8	obl	_	SpaceAfter=No
13	?	?	PUNCT	.	_	6	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **live** | to-infinitive |  |  |  | a tropical forest |  |  | vn lodge-46 «NP V PP.location»: agent=Theme in forest=Location |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
It needs salt water to drink

```conllu
# sent_id = question:world:16-climate-zones:t8:o1:1
# text = It needs salt water to drink
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	needs	need	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	salt	salt	NOUN	NN	Number=Sing	4	compound	_	_
4	water	water	NOUN	NN	Number=Sing	2	obj	_	_
5	to	to	PART	TO	_	6	mark	_	_
6	drink	drink	VERB	VB	VerbForm=Inf	2	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **need** | present | It | salt water |  |  |  |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot water=Theme |
| 2 | **drink** | to-infinitive |  |  |  |  |  |  | vn eat-39.1-1 «NP V»: agent=Agent |

### Option 2 · ✓ the right answer {#o2}

<!-- .ven lang=en -->
It is adapted to cold, not to heat

```conllu
# sent_id = question:world:16-climate-zones:t8:o2:1
# text = It is adapted to cold, not to heat
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	adapted	adapt	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	to	to	ADP	IN	_	5	case	_	_
5	cold	cold	ADJ	JJ	Degree=Pos	3	obl	_	SpaceAfter=No
6	,	,	PUNCT	,	_	9	punct	_	_
7	not	not	PART	RB	Polarity=Neg	9	advmod	_	_
8	to	to	PART	TO	_	9	mark	_	_
9	heat	heat	VERB	VB	VerbForm=Inf	3	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **adapt** | present · passive |  | It |  |  |  | to cold *goal* | vn adjust-26.9 «NP V NP PP»: subject=Patient to cold=Goal |
| 2 | **not** **heat** | to-infinitive |  |  |  |  |  |  | vn cooking-45.3 «NP.patient V»: agent=Patient |

### Option 3 {#o3}

<!-- .ven lang=en -->
It cannot see well in green light

```conllu
# sent_id = question:world:16-climate-zones:t8:o3:1
# text = It cannot see well in green light
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
2	can	can	AUX	MD	VerbForm=Fin	4	aux	_	SpaceAfter=No
3	not	not	PART	RB	Polarity=Neg	4	advmod	_	_
4	see	see	VERB	VB	VerbForm=Inf	0	root	_	_
5	well	well	ADV	RB	Degree=Pos	4	advmod	_	_
6	in	in	ADP	IN	_	8	case	_	_
7	green	green	ADJ	JJ	Degree=Pos	8	amod	_	_
8	light	light	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **see** | can | It |  |  | green light |  | well *property* | vn comprehend-87.2-1-1 «NP V»: agent=Experiencer |

### Option 4 {#o4}

<!-- .ven lang=en -->
It can only walk on sand

```conllu
# sent_id = question:world:16-climate-zones:t8:o4:1
# text = It can only walk on sand
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
2	can	can	AUX	MD	VerbForm=Fin	4	aux	_	_
3	only	only	ADV	RB	_	4	advmod	_	_
4	walk	walk	VERB	VB	VerbForm=Inf	0	root	_	_
5	on	on	ADP	IN	_	6	case	_	_
6	sand	sand	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **walk** | can | It |  |  | sand |  |  | vn run-51.3.2-2-1 «NP V PP.location»: agent=Theme on sand=Trajectory |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

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- ← previous: [Climate zones, test 7](https://md.mova.elamur.ai/free/en/corpora/questions/world/16-climate-zones/t7/)
- next →: [Climate zones, test 9](https://md.mova.elamur.ai/free/en/corpora/questions/world/16-climate-zones/t9/)
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