Which of these is an example of a chemical change? a. melting iron into a liquid b. breaking a piece of plastic in half c. dissolving salt in water d. setting a piece of paper on fire

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

What will happen if deforestation continue to destroy the green plant on the planet

Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs