If the water temperature in a lake drops from 20 degrees Celsius to 10 degrees Celsius what effect is more likely to have on aquatic animals that have a high demand for dissolved oxygen

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

Which number represents a basic ph, 4 or 9? numerical answers expected! answer for blank 1: i'll give