2. Humans discovered how to use fire and tools. How was this knowledge passed along to younger generations? O Younger people were forced to spend long hours building fires and making tools. O Communication skills were developed so knowledge could be passed along to younger generations. The younger generations were able to figure out how to use tools on their own. O Primitive knowledge was instinctive so that the basic skills of fire and tools came naturally to everyone.

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .

Complete the sentences by matching the names of trees to the appropriate blanks. to do this, drag the names on the left into the appropriate blanks in the sentences on the right. match the words in the left column to the appropriate blanks in the sentences on the right. terms may be used more than once. make certain you have filled every blank with a term before clicking submit. 1. deciduous trees lose their leaves seasonally and include trees such as maple and elm. 2. conifer leaves are generally thin and needle-like, while seeds are contained in cones. conifers include cedar and pine. 3. evergreens are plants that maintain their leaves in all seasons and include trees such as cedar, elm, and pine. 4. hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as maple, , and cedar. elm returned you filled in 2 of 10 blanks incorrectly. mango trees are tropical broad leaf plants that maintain their leaves all year long. no credit lost. try again.

What was darwins theory of common decent