The moraines left when glaciers retreat are poor soils characterized by
A. cairns that function as bird nests.
B. low nitrogen content and little organic matter.
C. ice year-round.
D. secondary succession.
E. high levels of nitrogen, phosphate and carbon.
B. low nitrogen content and little organic matter.
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A major paradox of development is how highly _________________ genes can produce diverse morphologies.
Fill in the blank(s) with the appropriate word(s).
What is the term used to indicate the growth of new blood vessels?
a. Biosynthesis b. Angiogenesis c. Metastasis d. Apoptosis
Suppose that a given gene undergoes a mutation to a dominant allele such that 2 out of 100,000 offspring exhibit the new mutant phenotype. Assuming that these offspring are heterozygous, what is the mutation rate for the gene?
What will be an ideal response?
Answer the following questions true (T) or false (F)
1. The stimuli for contraction of the heart come from within the heart rather than from the nervous system. 2. The left ventricle pumps blood into the pulmonary artery. 3. Inflammation is a typical part of the initial process that can result in a heart attack.