![subject](/tpl/images/cats/biologiya.png)
Biology, 28.01.2020 12:31 smilingntn33p7pqpp
What is the bodys first line of defense against pathogens? a white blood cells b mucous membranes c lymph nodes d red blood cells
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Biology
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 21.06.2019 21:00
~~16. while watching a special on animals, brianna discovers that hares tend to lose heat through their ears. based on this and what is known about surface-to-volume ratios, propose an explanation as to why hares that live in hot climates (such as the desert) have large, extended ears
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 21.06.2019 21:30
Organisms are classified, or grouped into categories, based on similarities in their characteristics and/or evolutionary relationships. the study of how organisms are classified is known as
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 03:30
What does the hardy-weinberg principle relate to? a. chances of survival of an organism b. frequency of alleles in a population c. natural selection in a species d. causes of evolution among organisms
Answers: 1
You know the right answer?
What is the bodys first line of defense against pathogens? a white blood cells b mucous membranes c...
Questions
![question](/tpl/images/cats/health.png)
Health, 06.05.2020 19:09
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 19:09
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 19:09
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 19:09
![question](/tpl/images/cats/biologiya.png)
Biology, 06.05.2020 19:09
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 06.05.2020 19:09
![question](/tpl/images/cats/ap.png)
Advanced Placement (AP), 06.05.2020 19:09
![question](/tpl/images/cats/en.png)
English, 06.05.2020 19:09
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 19:09
![question](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 19:09
![question](/tpl/images/cats/biologiya.png)