3. Which type of rock is formed 20 kilometers below Earth's surface? (1 sedimentary 2. metamorphic 3. igneous 4.magma please help me.

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.

Find the mass, in grams, of 5.00*10^23 molecules of f2