---
title: What would happen if every beaver dam on a stream were removed? — Animals of North America and Britain:… · tree and pragmatics
description: What would happen if every beaver dam on a stream were removed? Test 9 · ★★★ of lesson 80 «Animals of North America and Britain: moose, bald eagles, raccoons, beavers, foxes, badgers, hedgehogs, robins» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the qu
---

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# Test 9 · ★★★ · Animals of North America and Britain: moose, bald eagles,…

<!-- .ven lang=en -->
What would happen if every beaver dam on a stream were removed?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **What happens:** happen, remove · **To what, where:** beaver dam

<!-- .vabout -->
This is test 9 · ★★★ of lesson 80 «Animals of North America and Britain: moose, bald eagles, raccoons, beavers, foxes, badgers, hedgehogs, robins» of the biology 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/biology/80-animals-of-north-america-and-britain/#t9).

## The question {#question}

```conllu
# sent_id = question:biology:80-animals-of-north-america-and-britain:t9:1
# text = What would happen if every beaver dam on a stream were removed?
1	What	what	PRON	WP	PronType=Int	3	nsubj	_	_
2	would	would	AUX	MD	VerbForm=Fin	3	aux	_	_
3	happen	happen	VERB	VB	VerbForm=Inf	0	root	_	_
4	if	if	SCONJ	IN	_	12	mark	_	_
5	every	every	DET	DT	PronType=Tot	7	det	_	_
6	beaver	beaver	NOUN	NN	Number=Sing	7	compound	_	_
7	dam	dam	NOUN	NN	Number=Sing	12	nsubj:pass	_	_
8	on	on	ADP	IN	_	10	case	_	_
9	a	a	DET	DT	Definite=Ind|PronType=Art	10	det	_	_
10	stream	stream	NOUN	NN	Number=Sing	7	nmod	_	_
11	were	be	AUX	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	12	aux:pass	_	_
12	removed	remove	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	advcl	_	SpaceAfter=No
13	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **happen** | would |  |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |
| 2 | **remove** *a condition, not said to happen* | past · passive |  | every beaver dam on a stream |  |  |  |  | vn fire-10.10 «NP V NP»: subject=Theme |

<!-- .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 -->
The stream would make a bigger pond

```conllu
# sent_id = question:biology:80-animals-of-north-america-and-britain:t9:o1:1
# text = The stream would make a bigger pond
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	stream	stream	NOUN	NN	Number=Sing	4	nsubj	_	_
3	would	would	AUX	MD	VerbForm=Fin	4	aux	_	_
4	make	make	VERB	VB	VerbForm=Inf	0	root	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
6	bigger	big	ADJ	JJR	Degree=Cmp	7	amod	_	_
7	pond	pond	NOUN	NN	Number=Sing	4	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | would | the stream | a bigger pond |  |  |  |  | vn build-26.1-1 «NP.asset V NP»: agent=Asset pond=Product |

### Option 2 {#o2}

<!-- .ven lang=en -->
More beavers would move in

```conllu
# sent_id = question:biology:80-animals-of-north-america-and-britain:t9:o2:1
# text = More beavers would move in
1	More	more	ADJ	JJR	Degree=Cmp	2	amod	_	_
2	beavers	beaver	NOUN	NNS	Number=Plur	4	nsubj	_	_
3	would	would	AUX	MD	VerbForm=Fin	4	aux	_	_
4	move	move	VERB	VB	VerbForm=Inf	0	root	_	_
5	in	in	ADV	RB	_	4	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **move in** | would | More beavers |  |  |  |  |  | vn roll-51.3.1 «NP.theme V»: agent=Theme |

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
The pond would drain and the animals living there would lose their home

```conllu
# sent_id = question:biology:80-animals-of-north-america-and-britain:t9:o3:1
# text = The pond would drain and the animals living there would lose their home
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	pond	pond	NOUN	NN	Number=Sing	4	nsubj	_	_
3	would	would	AUX	MD	VerbForm=Fin	4	aux	_	_
4	drain	drain	VERB	VB	VerbForm=Inf	0	root	_	_
5	and	and	CCONJ	CC	_	11	cc	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	animals	animal	NOUN	NNS	Number=Plur	11	nsubj	_	_
8	living	live	VERB	VBG	VerbForm=Ger	7	acl	_	_
9	there	there	ADV	RB	PronType=Dem	8	advmod	_	_
10	would	would	AUX	MD	VerbForm=Fin	11	aux	_	_
11	lose	lose	VERB	VB	VerbForm=Inf	4	conj	_	_
12	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	13	nmod:poss	_	_
13	home	home	NOUN	NN	Number=Sing	11	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **drain** | would | the pond |  |  |  |  |  | vn clear-10.3-1 «NP.Source V»: agent=Source |
| 2 | **live** | gerund | the animals *not said here* |  |  | there |  |  | vn exist-47.1-1 «NP V»: agent=Theme |
| 3 | **lose** | would | the animals | animals's home |  |  |  |  | vn succeed-74-3-1 «NP V NP»: agent=Agent home=Eventuality |

### Option 4 {#o4}

<!-- .ven lang=en -->
Nothing at all would change

```conllu
# sent_id = question:biology:80-animals-of-north-america-and-britain:t9:o4:1
# text = Nothing at all would change
1	Nothing	nothing	PRON	NN	Number=Sing|PronType=Neg	5	nsubj	_	_
2	at	at	ADP	IN	_	3	case	_	_
3	all	all	DET	DT	PronType=Tot	1	nmod	_	_
4	would	would	AUX	MD	VerbForm=Fin	5	aux	_	_
5	change	change	VERB	VB	VerbForm=Inf	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **change** | would | Nothing |  |  |  |  |  | vn dress-41.1.1-1-1 «NP V»: agent=Agent |

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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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