Lichens are
a. only found growing on living matter.
b. insensitive to changes in the environment.
c. parasitic interactions between a fungus and an alga.
d. capable of causing some obscure diseases.
e. symbiotic associations between a fungus and an alga.

(drag each tile to the correct identify which questions can be answered by what can be answered by science or which cannot. -is it right or wrong to use genetic engineering to produce new food products? -what are the most common social settings that tend to produce accomplished artists? -if a new gene is added to the genome of a tomato species, will that species be more resistant to insects? -should humans use biotechnology to bring extinct organisms from the fossil record back to life? -do the types of organisms found in the fossil record appear in consistent sequences in different parts of the world? -are michelangelo's paintings more impressive than rembrandt's?

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above

What is required in the genotype of an individual to show a recessive trait? a.two recessive alleles b.at least one recessive allele c.no recessive alleles