Which statement describes the law of superposition?
sedimentary rocks were originally in horizontal layers.
in horizontal rock layers, each layer is younger than the one below it.
rock layers must be in existence before something can happen to them.
rocks that are not in horizontal layers were shifted by some geologic event.

Whose work is most likely to be part-time and at several locations? а. physical therapistb. sports physicianc nutritionistd group fitness instructor

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.

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays