Which of the following would be a valid hypothesis for a controlled experiment invesigating a person's ecological footprint

answer; 60-100; beats per minute

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.