Which of the following happens when cancer occurs? a. The control of the cell cycle is impaired.
b. Cells cannot pass the G1 checkpoint.
c. Apoptosis or programmed cell death takes place.
d. The cells can no longer enter the cell cycle.

Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?

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.

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment