True or false. A complex machine is 2 or more simple machines working together. 1. False
2. True

Which of the following can occur to two segments of a population if they are geographically isolated 1.) they can only share some types of genes 2.)both groups most likely become extinct 3.)they find a way to come back together 4.)eventually they become separate species

In what month (or months) does the most precipitation fall in each of these areas? what are the driest months in each of these areas? what is the coldest month in the tropical grassland? what is the warmest month in the temperate grassland?

In humans #of chromosomes at beggining of divisipn in mitosis