Why can ricin kill someone in a matter of a few days? Why is it absolutely untraceable once it is ingested? Why can't it instantly kill someone?

If the birth rate of a population of dolphins is 2.0, the death rate is 0.5, and the population size is 100, what is this dolphin's population growth?

Aphids are tiny insects that feed on plants. ladybugs are to plants because they eat aphids. which type of organism are aphids in this scenario? co decomposers predators prey producers

Which of the following is a way that minerals are used? a. industry construction technology d. all of the above