Fast me
question 15
how many half-lives does it take for a radioactive substance to d...
![subject](/tpl/images/cats/biologiya.png)
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Biology
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 11:00
What are antigens and antibodies? how are they involved in the bodyβs response to incompatible blood?
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 15:30
What is it called when lava when it erupts from the surface through volcanoes.
Answers: 2
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 16:00
Darwinβs hypothesis about how life changes over time is now called?
Answers: 2
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 18:00
Which is an innovation of gymnosperms? gymnosperms are the first seed plants. gymnosperms are the first flowering plants. gymnosperms are the first vascular plants. gymnosperms are the first spore plants.
Answers: 3
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 06.11.2020 18:10
![question](/tpl/images/cats/en.png)
English, 06.11.2020 18:10
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 06.11.2020 18:10
![question](/tpl/images/cats/en.png)
English, 06.11.2020 18:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.11.2020 18:10
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.11.2020 18:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/User.png)
SAT, 06.11.2020 18:10