Prions are are thought to cause disease by
a) rna molecules encoding toxic proteins
b) an abnormal type dramatically enhancing the rate of viral nfection
c) dna molecules .. jumping around the genome and mutating genes
d) mutant dna toxic proteins
e) abnormally shaped inducing similar but normally shaped proteins to the brain to adopt the abnormal form

E) Abnormally shaped proteinsinducing similar but normally shaped proteins to the brain to adopt the abnormal form

Explanation:

humans are now responsible for causing changes in the environment that hurt animals and plant species. we take up more space on earth for our homes and cities. we pollute habitats. human activity often changes or destroys the habitats that plants and animals need to survive.