2 Several miles from an industrial pleat the stone of some buildings and statues
appears eroded. Some metal structures
are also damaged, and nutrients have
leached from the soil, causing plants to
wilt. What is a possible cause of all of
these problems?
A. smog
B. greenhouse gases
C. ozone depletion
D. acid rain

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?

Climate warming trends allow plant and insect species to inhabit larger ranges. select the best answer from the choices provided