Ornithologists have noted that Mexican Jays in Arizona are nesting 10 days earlier in the springtime today than they did in the 1970s. They suggest that this behavior is evidence of
________.
Fill in the blank(s) with correct word
global warming, or climate change
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Which of the following is an example of cardiac output?
a. The hummingbird heart beats approximately 800 times per minute. b. During exercise, the heart rate in humans can double. c. The human heart pumps about 1500 gallons of blood per day. d. All of these are examples of cardiac output.
What is the difference between a nucleoside and a nucleotide?
a. A nucleoside is only found in RNA, but nucleotides are found in both. b. A nucleoside forms through hydrogen bonding, but nucleotides form through covalent bonding. c. A nucleoside is a nucleotide without the phosphate group(s). d. A nucleoside results from mutation and nucleotides are non-mutated forms.
Water molecules are nonpolar molecules.
Answer the following statement true (T) or false (F)
Which element is LEAST likely to be an abiotic factor that can affect community structure?
a. sunlight b. rainfall c. cloud cover d. decomposing organic matter e. temperature