Most of the GMO crops grown today were developed to help farmers prevent crop loss. The three most common traits found in GMO crops are: (1) resistance to insect damage; (2) tolerance to herbicides; and (3) resistance to plant viruses. Let's consider #2, tolerance to herbicides: farmers using herbicide-tolerant crops do not need to till the soil, which they normally do to get rid of weeds. Which of these is NOT a positive environmental and economic impacts of this GMO trait?

Hydrilla (hydrilla verticillata) is an invasive aquatic plant and one of the most serious aquatic pests in florida. hydrilla has already been introduced to hundreds of bodies of water throughout florida, hydrilla is difficult to control because it grows rapidly and survives in many different water depths and conditions. hydrilla • describe how hydrilla affects native plant and animal species. include both a biotic and an abiotic limiting factor. • suggest one biotic and one abiotic recommendation that could slow the spread of hydrilla

Fungi are classified into how many groups? a. 1 group b. 2 groups c. 3 groups d. 4 groups

Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?