• Trees turn carbon dioxide into oxygen that helps us breathe and reduces air pollution. • Trees also filter lots of other chemicals from our air and purify it making the air healthier for us to breathe. ... • They also clean the air by stopping a lot of flying dust particles etc from flying. ... Trees are the essential link in the food chain of life; they capture sunlight and convert it into energy. ... As plants turn sunlight into sugars, through the process of photosynthesis, they use up water. ...

• Word Count: 2774
• Approx Pages: 11
• Grade Level: High School

Classification of Living Things Classification is defined as identification, naming, and grouping of organisms into a formal system based on similarities such as internal and external anatomy, physiological functions, genetic makeup, or evolutionary history. ... Many of these organisms have become extinct, while some have developed into the present world. ... Animal Kingdom The Animal Kingdom includes more than one million living species, grouped into more than 30 categories or classifications. ... In tundra and on polar ice, winter air temperatures can fall to below ...

• Word Count: 2632
• Approx Pages: 11

They have very thin root hairs to make it easier to absorb water from a larger surface area. ... The next stage is where the water enters into the xylem then it moves more into the plant itself. ... This symmetry pretty much divides the body into right and left sides equally. ... The spores and pollen also have a protective coating, or sporopollenin, a sealing material that permits their dispersal by air currents without the danger of drying. ... Protected with the ovary are the ovules, which develop into seeds after fertilization. ...

• Word Count: 3790
• Approx Pages: 15
• Grade Level: High School