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

Biology & Microbiology

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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

Biology & Microbiology

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.

Biology & Microbiology

People with type ____ blood show codominance because both alleles are expressed.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

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?

Biology & Microbiology