About one-quarter of Australian frog species use one of these methods. Even within a single species, the time taken for tadpoles to develop can vary. There are a number of factors that determine this. One is the temperature of the water (within a comfort range, warmer water leads to faster development).
nerdnoun [ C ] uk â /nÉËd/ us â /nÉËd/ informal disapproving. âº a person, especially a man, who is not attractive and is awkward or socially embarrassing: He was a real nerd in high school - I can't believe he's so handsome now. âº a person who is extremely interested in one subject, especially computers, and knows a lot of facts about it: I'm a real grammar nerd.
Stereotypical nerd appearance, often lampooned in caricatures, includes very large glasses, braces, severe acne and pants worn high at the waist. In the media, many nerds are males, portrayed as being physically unfit, either overweight or skinny due to lack of physical exercise.