You have a stock bottle of 4mm tetrodotoxin solution, but your protocol states that
you need 2 ml of 0.5mm tetrodotoxin (mw=319.27 g/mol). how much of your 4mm
stock solution (liquid) should you use to make the 0.5mm solution?

Of the pollutants that form acids in the atmosphere, which is easiest to reduce? a. sulfur dioxide b. nitrogen dioxide c. ozone d. carbon monoxide

When plants use sunlight to make food, the energy of sunlight is

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.