Fungi are found associated with the earliest plant fossils. Fungi may have helped plants become terrestrial by A. providing simple organic compounds in return for sugars. B. killing the bacterial enemies of plants. C. stocking the soil with organic matter. D. forming mycorrhizal associations with plants and by decomposing organic matter.

Which term describes the number of waves that pass a given point in a given time? crest frequency trough wavelength

The human genome project is devoted to mapping the general dna sequence of our species. this could lead to the development of new medicines, as well as the possibility of using gene therapy to treat certain diseases. however, there are some ethical issues surrounding the mapping of individual genomes. one concern is a) that your genes may change over time, making the project useless. b) that insurance companies could discriminate based on genetic make-up. c) that since this has never been done before, we should probably not do it now. d) that sequencing our individual genomes is so expensive, it is a counter-productive strategy.

Which statement describes compounds a. compounds are made of one type of atom. b. compounds cannot be represented by models. c. compounds are represented by chemical formulas. d. compounds cannot be broken down into simpler forms.