True or False: Once someone has been diagnosed with stage 4 cancer, there are no further treatment options that may help.
Answer the following statement true (T) or false (F)
False
There are many treatment options for those even with advanced stage 4 cancers that can help prolong life expectancy.
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The gametophyte of a fern is
(a) haploid. (b) photoautotrophic. (c) a structure that produces eggs and/or sperm. (d) all of the above.
During exhalation, the diaphragm _______.
A. contracts and moves down B. relaxes and moves up C. relaxes and moves down D. contracts and moves up
Which of the following describe density-dependent factors?
_____ They act to regulate population growth. _____ They are especially important in K-selected populations. _____ They can affect growth rates but not population size. _____ They can affect birth rates or death rates. _____ They do not involve biological interactions. _____ One example would be intraspecific competition for resources.
Cladistics is based upon evolutionary relationships which generate ___________ structures.
Fill in the blank(s) with the appropriate word(s).