Who wrote a book that helped lead to the discovery of bacteria? A) Zacharias Janssen
B) Robert Hooke
C) John Newton
D) Anton van Leeuwenhoek

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind

Give two examples of what would occur if one of the pairs did not match or had an extra chromosomes. explain how this might occur, and if it would be dangerous to the individual. fast.