Scientists believe that each species’ distinct communication styles help lizards in what way? Select one:
a. Different bob styles allow mothers to distinguish between their offspring and other juveniles.
b. Different bob styles may help lizards select appropriate mates within their own species.
c. Bobbing helps migrating lizards maintain communication as they travel.
d. The lizard that changes its bobbing the most continues to surprise its prey, thereby getting the most food.

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.