1. The body has different types of defences against pathogens.
1 antibodies
2 hairs in the no...
![subject](/tpl/images/cats/biologiya.png)
Biology, 30.11.2020 07:40 SKYBLUE1015
1. The body has different types of defences against pathogens.
1 antibodies
2 hairs in the nose
3 mucus
4 skin
Which defences help to prevent pathogens reaching the alveol, when
breathing in?
A 1, 2, and 3
B 2, 3, and 4
C 2 and 3 only
D 2 only
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Biology
![question](/tpl/images/cats/biologiya.png)
Biology, 21.06.2019 22:30
How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 04:00
The distribution of related animals and plants across the world
Answers: 3
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 14:30
What happens when a plant is losing too much water through transpiration? question 14 options: stomata open stomata close guard cells swell respiration increases
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 19:00
What is the next step in muscle contraction after the actin changes shape
Answers: 2
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 26.05.2021 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 26.05.2021 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 26.05.2021 01:00
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 26.05.2021 01:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 26.05.2021 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 26.05.2021 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 26.05.2021 01:00
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 26.05.2021 01:00
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 26.05.2021 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 26.05.2021 01:00