number 2
number 2 because the colour doesnt matter
Answer: All the options are correct.
Explanation:
A pericardium is the sac that compass the heart , protects , lubricate and keep it in place.
The functions of pericardium are:
1. It keep the heart fixed in its place in the chest cavity.
2. It prevent the heart from stretching and overfilling with blood I.e it minimize blood infow.
3. It prevents friction by lubricating the heart.
4. It protects the heart from infection that might be nearby either from lungs or other organs.
D. All of the above
acid rain damages all of those options
Answer: Organisms (D)
Explanation:
Hey there! I will give the following steps, if you have any questions feel free to ask me in the comments below.
Life is made of different <u>organisms</u>, or forms of life.
~I hope I helped you! :)~