In the evolutionary history of plants, the Carboniferous period is the period when the earliest known plants existed.

the period when the earliest known vascular plants existed.

a time period when dense forests of seedless vascular plants existed.

a time period when diverse species of gingkoes flourished.

the period when angiosperms diversified.

Which of the following systems in absorbing oxygen and releases carbon dioxide

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.

Compare the composition of the moon's surface with the composition of the earth's surface.