In a sandy beach community, ghost crabs and beach flies occur within

A) the supratidal zone.
B) the intertidal zone.
C) the subtidal zone.
D) any tidal zone.


A

Biology & Microbiology

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Which of the following is not a factor used directly in determining water potential of plant cells?

A. solute inside the cell B. solute outside the cell C. pressure at the cell wall-membrane interface D. temperature E. cell turgor pressure

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If an ecologist wants to determine the number of grass plants in a grassland, it is not realistic to actually count them all. Rather the researcher measures the number of individuals in several one-meter by one-meter square plots. What must they do next to estimate the total population size?

What will be an ideal response?

Biology & Microbiology

The sliding-filament model of muscle contraction is described by the action of ____ pulling ____ inward

a. muscle fibers; actin filaments b. myofilaments; sarcomeres c. sarcomeres; Z lines d. actin filaments; myosin filaments e. myosin filaments; actin filaments

Biology & Microbiology