![subject](/tpl/images/cats/biologiya.png)
Biology, 20.08.2019 12:50 christyr2002
In a chemical change, the substance that changes is called the product. true or false
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Biology
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 05:40
Identify characteristics of energy from the sun. check all that apply. almost all of the energy on earth comes from the sun. energy from the sun is known as mechanical energy. the energy in fossil fuels originally came from the sun. plants convert the energy of sunlight into chemical energy.
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 11:30
Ihave no idea how to solve these. plus there's another question that is 2) a 10 kilogram meteorite is collected in space and brought back to earth. it is composed of 1.25 kg of uranium-238 and 8.75 kg of lead-206. how many u-238 half lives have passed? what is the approximate age of the meteorite?
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 19:30
Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?
Answers: 1
You know the right answer?
In a chemical change, the substance that changes is called the product. true or false...
Questions
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 20.03.2020 20:10
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 20.03.2020 20:11
![question](/tpl/images/cats/istoriya.png)
History, 20.03.2020 20:11
![question](/tpl/images/cats/mat.png)
Mathematics, 20.03.2020 20:11
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 20.03.2020 20:11
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 20.03.2020 20:12
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)