Entropy means that _________.

A. the quantity of usable energy declines with each transformation
B. energy can be neither created nor destroyed
C. life should be impossible
D. it is not possible to observe an increase in molecular organization


A. the quantity of usable energy declines with each transformation

Biology & Microbiology

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A circulatory system that allows some mixing of oxygenated and oxygen-poor blood is indicated by the letter(s) ____

a. A only b. B only c. C only d. A and B only e. B and C only

Biology & Microbiology

A hypothesis supported by one experiment can be considered a theory

a. true b. false

Biology & Microbiology

The theory illustrated in Figure 21-1 is supported by which piece of additional evidence?


a. The results of the Miller-Urey experiment.
b. Burgess shale fossils.
c. Ediacarian fossils.
d. The presence of DNA in some organelles.
e. All answers support the illustrated theory

Biology & Microbiology

fertilization (when and egg and sperm meet)

What will be an ideal response?

Biology & Microbiology