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. Felines hit puberty and begin mating at about the age of 6 months. A cat's gestation period last approximately 63 days, so if you bred your cat or know when she got out of the house and probably mated you can expect kittens to arrive two months later.The gestation period for Siamese cats is a few days longer.elines hit puberty and begin mating at about the age of 6 months. A cat's gestation period last approximately 63 days, so if you bred your cat or know when she got out of the house and probably mated you can expect kittens to arrive two months later.