Humans! They inhale and Exhale Oxygen and Carbon Dioxide.
I thought about writing it for you but then i found this and thought i will give help but at the sometime allow you write the response you self
The picture is blurry I can’t see the thing
Hello,
Here is your answer:
The proper answer to this question is option D "wood is burned". Its a chemical change because its changing forms wood to ash.
Your answer is D.
If you need anymore help feel free to ask me!
Hope this helps!
Answer:
19) 3.6920 × 10⁻⁵
20) 4.059× 10²
21) 2.46810121416 × 10³
22) 1.0000× 10⁻³
Explanation:
Scientific notation is the way to express the large value in short form.
The number in scientific notation have two parts.
The digits (decimal point will place after first digit)
× 10 ( the power which put the decimal point where it should be)
For example:
0.000036920
In scientific notation = 3.6920 × 10⁻⁵
405.9
In scientific notation = 4.059× 10²
2468.10121416
In scientific notation = 2.46810121416 × 10³
0.0010000
In scientific notation = 1.0000× 10⁻³
