Studies assessing the amounts of different carbon isotopes (12C, 13C, and 14C) in the atmosphere were important because they provided evidence that human activities were in fact adding CO2 to the atmosphere. This is an example of what type of relationship

A. correlation
B. symbioses
C. causation
D. conduction
E. antagonism


C

Biology & Microbiology

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The Law of Thermodynamics that states that energy cannot be created or destroyed is:  

A.  The First Law of Thermodynamics B.  The Second Law of Thermodynamics C.  The Third Law of Thermodynamics D.  The Fourth Law of Thermodynamics

Biology & Microbiology

Some bryophyte species are ____, meaning that they grow independently on another organism

a. tracheophytes b. epiphytes c. parasites d. charophytes e. rhizoids

Biology & Microbiology

A biologist discovered a new animal. Upon studying its embryonic development, she observed radial cleavage with the blastopore developing into an anus. This animal was categorized as a

A. parazoan. B. deuterostome. C. pseudocoelomate. D. radiata. E. protostome.

Biology & Microbiology

In dandelions, female gametophytes and their eggs are ________ because during megaspore generation, homologous chromosomes do not pair and ________ does not occur.

A. haploid; meiosis II B. diploid; meiosis I C. haploid; meiosis I D. diploid; meiosis II

Biology & Microbiology