What is heterogeneity?
a. intra-species genetic variation
b. similarity between species across habitats
c. number of ecological niches
d. endemic inbreeding
c. number of ecological niches
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Select the phylum that includes deuterostome animals that are exclusively marine and have radial symmetry as adults.
A. Porifera B. Rotifera C. Echinodermata D. Chordata E. Cnidaria
Which statement is true about sudden cardiac arrest?
a. It happens about 20,000 times annually in the United States. b. It is usually caused by a birth defect when it happens in people aged 36 or younger. c. Its survival rate can be increased by performing a tracheotomy d. It occurs only in the elderly. e. Its survival rate increases about 10% through the use of CPR.
People with type ____ blood show codominance because both alleles are expressed.
Fill in the blank(s) with the appropriate word(s).
Movement of molecules or ions from a region of higher to lower concentration; it requires no energy and tends to lead to an equal distribution (equilibrium).
What will be an ideal response?