Rating Newest Oldest. Best Answer: yes carbon dioxide is a pure substance, provided there is nothing else in it. as soon as you add some oxygen (O2) or methane (CH4) etc it is not pure. the actual molecule is CO2, one carbon and 2 oxygen atoms everytime which makes it pure. it is the same as saying pure salt. salt has sodium and chlorine in it but is still a pure substance provided nothing else is in it.
Yes, mother cats do mate with their offspring. I had cat which had become so old that my family members used to call her grandmother cat. I had once seen her mating with her offspring and THEIR offspring at different times!
Gestation Period for Cats. The Gestation Period for Cats is approximately 60-67 days from the first breeding. Cats will not always conceive after one breeding and will generally mate multiple times in one cycle. The Cat Gestation Period Calculator above attempts to generalize the estimation of the due date without any additional factors using a 63 day gestation period for cats.