Density is mass divided by volume. The mass of the block is 10 grams. The volume of the block is 2 mL: the water changes from the 3 mL line to the 5 mL when the block is added, so the block must be 5-3= 2 mL.
So, the density is 10 g / 2 mL = 5 g/mL.
Hope this helps!
My answer will be that the letter "A" in the chromosome refers to "adenine", which is considered as one of the five nitrogenous bases that are part of the nucleic acids (DNA and RNA), which was named in 1885 by Albrecht Kossel.
The correct answers is : <span>They allow the exchange of gases between cells in the leaf and the external environment
The stomata are small openings that can be found on both the upper and the down part of the leaf and they are connected to the plant's vascular system.
These openings enable the plant to get rid of excess water in the form of vapor and to take CO2 from the atmosphere that is essential for the process of photosynthesis. </span>
I have a lot... But, I'll give two like you wanted.
1. They all need blood so that they can stay alive and keep you breathing
2. There's mucus somewhere around the lungs of all living things...
(brainliest maybe?)
A positively charged particle in an atom is a Proton
