Which of the following tends to happen as a population approaches its carrying capacity?
A. increased competition for food
B. increased competition for light
C. increased competition for shelter
D. increased competition for mating sites
E. All of the choices are correct.
Answer: E
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The energy required for plants to perform photosynthesis comes from which of the following?
a. mechanical energy b. light energy c. chemical energy d. kinetic energy
If you were to take a trip from New York City (33 feet above sea level) to Denver (5280 feet above sea level), which of these would change?
a. atmospheric oxygen concentration b. tidal volume c. partial pressure of CO2 in the lungs d. vital capacity
Structures that will develop into leaves and buds arise at a lateral meristem
____________________ Indicate whether the statement is true or false.
Diffusion occurs because
A. Molecules constantly move and collide with each other B. Cellular energy forces molecules to collide with each other C. Molecules are attracted to one another D. Cellular energy pumps molecules across the cell membrane