Which of the following characteristics make(s) an organism well adapted to colonizing a
disturbed area?
a. Its seeds germinate quickly.
b. It tolerates a wide range of environmental conditions and resources.
c. It has a broad ecological niche.
d. all of these
D
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What do large lymph vessels have in common with veins?
a. they transport deoxygenated blood b. they are a reservoir for blood c. they drain into the inferior vena cava d. they have valves e. they carry carbon dioxide
The letter designation of human blood type is controlled by a single gene with three alleles (the allele that produces type A blood, the allele that produces type B blood, and the allele that produces type O blood). This is an example of _______.
a) incomplete dominance b) a polygenic trait c) environmental influence d) multiple allele inheritance
Answer the following statements true (T) or false (F)
1.Lichens and mosses that can grow on and erode rock would be considered pioneer species. 2.All communities eventually reach the climax state, in which all components are consistent. 3.Energy is constantly being recycled within an ecosystem. 4.Raw sewage within a water ecosystem can kill fish because respiration by the microbes in the sewage reduces the concentration of oxygen within the water. 5.In a process called denitrification, bacteria convert NO – to N .
The ________ birthrate is expressed as the births per 1000 individuals per unit of time
Fill in the blank(s) with correct word