What is the best way to investigate the effects of factors that influence populations?
What will be an ideal response?
The best way to determine the effects of specific changes on a population is to perform experiments in
a controlled environment. The researcher could then initiate a change in only one factor. By testing
different factors in this controlled environment, it is possible to postulate how things would occur in
nature.
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Which of the following pigments is found exclusively in red algae?
A) chlorophyll a B) chlorophyll c C) lutein D) phycoerythrin E) ?-carotene
Which group has radial symmetry?
1.Phylum Cnidaria 2.Phylum Nematoda 3.Phylum Porifera 4.Phylum Platyhelminthes
A number of populations of different species interacting with one another in a natural environment, such as a rotten log, is called
Select one: a. competition. b. a community. c. a biome. d. predation. e. symbiosis.
What occurs during Prophase II?
What will be an ideal response?