Answer:
Explanation:
The mass of the substance is determined by subtracting the first reading from the second. A container holding the substance of interest is placed on the balance and weighed. This is the first reading. The substance to be used is removed from the container and the container weighed again.
Answer:
Which is the best example of physical weathering?
The cracking of rock caused by the freezing and thawing of water
Explanation:
The cracking of rock caused by the freezing and thawing of water is the best example of physical weathering
the same goes for the other
In turtles, the heart has two atria and a single ventricle partially divided by a wall of tissue called a septum
In crocodiles, there are two atria and two separate ventricle
