While we are not exactly sure how fast or how much the Earth's average temperature will rise, we know that: If people keep adding greenhouse gases into the atmosphere at the current rate, the average temperature around the world could increase by about 4 to 12°F by the year 2100. If we make big changes, like using more renewable resources instead of fossil fuels, the increase will be less – about 2 to 5°F. —"A Student’s Guide to Global Climate Change," US Environmental Protection Agency What solution does the author offer for reducing greenhouse gases? Which phrase helps readers understand that this is a solution?.

Greenhouse gases combine more heat into the Earth's atmosphere, which leads to higher average temperatures around the world. It can be decreased by using renewable resources as also mentioned in the question.

Temperatures have risen over the last 30 years, with 2001-2010 being the warmest decade on record. As the earth warms, heat waves are becoming more common in several places, including the United States.

Heatwaves occur when the area becomes very hot for a few days and at night. The choices we make now and in the coming decades will determine how much the planet's temperature will rise. Higher temperatures mean that heatwaves occur more often and are likely to last longer. Heatwaves are dangerous and can cause illnesses such as febrile seizures and heat stroke, or even death.  

High temperatures can also trigger a chain reaction of other changes around the world. Rising temperatures also affect the ocean, weather patterns, snow and ice, and plants and animals. The warmer it is, the more serious the impact on people and the environment.

Thus it conclude that greenhouses gases can be decreased by avoiding an increase in higher temperature.

To know more about greenhouse gases refer to the link :  

activity

the category "activity" includes exercise, rest and sleep. there is much confusion about the role that exercise and sleep play in health. like diet, activity is an area where each person can take control.    

vigorous physical activity puts demands on all body systems to work harder. the body responds to these demands by becoming stronger and more efficient. the health benefits of exercise include improved metabolism, increased muscle and bone strength, more efficient cardiovascular (heart and blood vessel) function, larger lung capacity, tension reduction, and improved sleep.

the most efficient way to obtain these benefits is through regular aerobic exercise. aerobic exercise involves the large muscles of the body, particularly the legs. examples include brisk walking, jogging, swimming and bike riding. exercise is most enjoyable when it is incorporated into recreation and becomes a regular part of your normal daily activities.

the benefits of regular aerobic activity are becoming more widely understood and accepted; however, the benefits of sleep are often ignored. sleep deprivation can suppress the body's immune system, and has been associated with depression. healing activity is accentuated during sleep. two aspects of sleep must be considered: quality and quantity.

many people just don't allow enough time for sleep. they regard it as a waste of time and use drugs such as caffeine to stimulate their exhausted bodies into action. some people allow plenty of time for sleep, but the quality of their sleep is poor. regular exercise is often effective in people improve their ability to fall asleep. physically fit people spend more of their sleeping time in deep sleep, and in rem (rapid eye movement), or dreaming sleep, the more restorative stages of sleep. people who are getting enough sleep wake spontaneously and feel refreshed.

psychology

psychological health is characterized by high self-esteem and is dependent on two primary features: productive activity and effective interpersonal skills.

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answer; /// i believe the answer is (sterilization ) plz check first.good luck