Answer:
Tobacco can affect the excretory system by causes colorectal cancer.
Explanation:
The exact cause of colorectal cancer is not clear, but certain risk factors, including diet, cigarette, smoking and heavy alcohol consumption and using tobacco are strongly linked to the disease.
Individuals with other genetic cancer syndromes or a family history of colorectal cancer may have a high chance of developing the disease.
I think It’s the skeletal system gives a body shape or form and helps you to both protect the support the entire organism bone Cartlidge tendons joints ligaments and other tissues
Answer:
Proof of 
is shown below.
Explanation:
The given equation is
To prove : 
Proof : Let as assume,
...(1)
...(2)
...(3)
We know that
Using (1), (2) and (3), we get
On comparing both sides, we get
Hence proved.
Answer:
by moistening, heating, and purifying air as it proceeds down the airways
Explanation:
The upper respiratory system support good health by moistening, heating, and purifying air as it proceeds down the airways.
For youth it's 35 feet for older its 40 feet
