Q: Answer this question: how does weather happen?
A: Weather is driven by air pressure (temperature and moisture) differences between one place and another.

Q: Answer this question: what are the characteristics of an ethnic group?
A: Ethnic identity is constantly reinforced through common characteristics which set the group apart from other groups.

Q: Answer this question: what naturally occurring isotopes does cobalt have?
A: Naturally occurring cobalt (Co) is composed of 1 stable isotope , 59Co. 28 radioisotopes have been characterized with the most stable being 60Co with a half-life of 5.2714 years, 57Co with a half-life of 271.79 days, 56Co with a half-life of 77.27 days, and 58Co with a half-life of 70.86 days.

Q: Answer this question: where is testosterone produced?
A:
In mammals , testosterone is primarily secreted in the testicles of males and the ovaries of females , although small amounts are also secreted by the adrenal glands .