An estimation of the area of the Earth's surface a human requires to produce the resources he or she needs and to remove the wastes he or she produces is called a(n) ________
Fill in the blank(s) with correct word
ecological footprint
Biology & Microbiology
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Darwin's three observations on the origin of species ___________
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Which of the following are specialized cells that receive and transmit chemical and electrical signals?
a. glial cells b. dendritic cells c. neuron cells d. axon cells
Biology & Microbiology
In muscle contraction, which of the following
triggers the power stroke?
a. release of Pi from the myosin head b. binding of ATP to the myosin head c. hydrolysis of ATP into ADP and Pi d. cross-bridge formation between actin and myosin e. relaxation of the sarcomere
Biology & Microbiology
The first haploid structure in the life cycle of a
plant is the
a. zygote. b. gamete. c. gametophyte. d. spore. e. sporophyte
Biology & Microbiology