Answer:
<h3><em><u>1 years</u></em></h3>
Explanation:
In general, small dogs enjoy longer lives than do their larger counterparts. A recent analysis of veterinary records revealed that dogs under 20 pounds had an average lifespan of 11 years while those over 90 pounds typically lived for only 8 years. Medium and large dogs fell in the middle at around 11 years.
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The answer 1 is: True, the answer 2 is :false
Sebaceous glands produce a substance that moisturizes and protects the skin.Because it produces a substance called sebum. The sebum moisturizes the skin and form a protective layer from infections.
Genetic disorders can be caused by a mutation in one gene (monogenic disorder), by mutations in multiple genes (multifactorial inheritance disorder), by a combination of gene mutations and environmental factors, or by damage to chromosomes
