What are the MAIN processes through which oxygen is cycled?
A
acid rain and greenhouse effect...
![subject](/tpl/images/cats/biologiya.png)
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Biology
![question](/tpl/images/cats/biologiya.png)
Biology, 21.06.2019 19:30
1. the is the thinnest part of the earth. 2. the is the thickest part of the earth. 3. what metals are mentioned in the text?
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 01:00
All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 09:30
Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 10:00
Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?
Answers: 2
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 19.11.2019 20:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 19.11.2019 20:31
![question](/tpl/images/cats/mat.png)
Mathematics, 19.11.2019 20:31
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
English, 19.11.2019 20:31
![question](/tpl/images/cats/es.png)
Spanish, 19.11.2019 20:31