Answer:This maybe correct
Explanation:
Mountain biodiversity faces a number of serious and growing challenges. Habitat degradation caused by unsustainable clearing of land results in erosion of fertile soil and increases the threat of avalanches, landslides and flooding. With this change in habitat, rare species of plants and animals can face extinction.
Over the next four decades, this population is projected to more than quadruple. Because of increases in life expectancy at older ages, people 90 and older now comprise 4.7 percent of the older population (age 65 and older), as compared with only 2.8 percent in 1980. By 2050, this share is likely to reach 10 percent.
Answer:
Essential
Explanation:
Your body needs 21 amino acids and can make 12 of them all by itself. The other 9 are supplied by food and are called <u>essential</u> amino acids.
