Answer:
s ethrtzhzrt hj fxtj fxtExplanation:
jxft jxtfj
The second pair of ribs or the true ribs
Answer: Land, Water,Urbanization, and smog and acid rain.
Explanation:
Smog and acid rain are produced through similar sources, primarily vehicle and industry emissions. Though both result from human-caused air pollutants, there are chemical distinctions between the two. Though there are regulations in effect to reduce both types of pollution, they remain a threat to both human health and the environment.Smog Causes A combination of three components -- nitrogen oxides, volatile organic compounds (VOCs) and sunlight -- causes smog. Nitrogen dioxide interacts with sunlight to create nitrogen oxide and a free oxygen molecule. This interaction produces ozone, which typically turns back into nitrogen dioxide, and the cycle repeats. The addition of VOCs interrupts the cycle, however. VOCs are produced by various sources, such as paint, cleaning products and refrigerants. The VOCs prevent the breakdown of ozone, allowing it to gather near the surface of the Earth, where even more nitric oxides are produced by vehicle and industry emissions, creating the dense smog seen in large cities such as Los Angeles and Beijing.Smog Hazards The presence of ozone in the form of smog can have several negative health effects. Respiratory systems can be irritated, reducing overall lung function and triggering asthma attacks. Evidence reported by the Environmental Protection Agency also suggests exposure to ozone reduces immune system responses, especially in the lungs. These effects subside over time, but little is known about the long-term effects of repeated exposure. Vegetation also suffers from smog, as plants that take up too much ozone can be damaged in ways such as discoloration and a loss of leaves that cuts photosynthesis efficiency by up to 50 percent.
Answer:
1. B
2. C
(check with your teacher to make sure and explain it to you)
Answer:
Her knee ligaments are weakened or injured so they can't stabilize the bones
Explanation:
Ligaments are dense connective tissues that serve to connect bones to each other. Ligaments are made by definite arrangement of collagen fibers in particular pattern. Weakening or injury to ligament makes the joints unstable. Since ligaments are not strong enough to hold the bones together, weakened or injured ligaments lead to bone dislocation. The woman with complaint of regular bone dislocation in her left knee must have weak or injured ligaments that can’t stabilize the bones.
