Genetics explain why you look like your father and if you don't why you should. Dew is formed on leaves when the sun shines down on them and makes them perspire. Life is a sexually transmitted disease. Biologists do it with clones. Botanists do it in the bushes.
Zoologists do it with animals.
Only one, but it takes eight million years. One to change it and three to write the environmental-impact statement. 2 - discussing dismemberment over a gourmet meal seems perfectly normal to you. 3 - you believe a good tape job will fix anything. 4 - you have the bladder capacity of five normal people.