-Ice cores and tree rings are two ways that scientists study the history of Earth’s climate. -Compare the two by writing each of the characteristics listed in the chart into the correct location on the Venn diagram below.

-Contains air bubbles

-Shows precipitation changes

-Shows changes in temperature

-Can measure climate from over a million years ago

-Contains pollen

-Contains volcanic ash

-Shows atmospheric composition

-Shows presence of groundwater

-Can measure climate for up to a few thousand years

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

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.

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?