Answer: Five
Each pond or lake have typically five zones in common.
1. The littoral zone: It is the shore area of the pond or lake. It is a transition zone between the dry shore area and the open water.
2.The limenetic zone: It is the open water area of the lake or pond. This is the portion of water that receives sunlight light.
3.The euphotic zone: It is the zone where, algae and other plants grows. Also, this zone favors the growth of aquatic animals such as fishes, because oxygen levels are higher as this zone traps the atmospheric oxygen.
4. The profundal zone: It is the zone located below the limentic zone. This zone is not penetrated by sunlight. The size of the zone depends upon the age and water clarity of the pond or lake. It exhibit low fish and plant population because of the lack oxygen present in this zone.
5. The benthic zone: It is the zone which is found at the bottom of the lake or pond. It consists of organic sediments and soil. This zone involves decomposition activity of the dead organic matter obtained from dead algae, plants, fish and animal wastes.
The answer is condensation and evaporation.
Strategic minerals are resources or elements that are important to everyday life because it can be a source of renewable energy and are used in manufacturing household items, equipment regarding national security, and agricultural production.
Africa is leading worldwide in terms of abundance of strategic minerals like diamond, platinum, chromium and many more. Other essential minerals such as gold, silver, copper and colored gemstones are critical minerals are imported from Afghanistan.
The flat land was a great place to raise cattle. As more people moved west, the cattle industry began to grow. During the 1870s and early 1880s, cattle ranching went through a boom. This was a period where ranching grew more than normal.
Answer:
The blank is SOURCES
Explanation:
Sources of energy can either be RENEWABLE OR NON-RENEWABLE. Renewable sources of energy are those sources which are easy to replenish while non-renewable sources are difficult to replenish after being exhausted.
Biomass, which comes from plants and animals are considered to be SOURCES of renewable energy because they renewable energy because they take time to grow and require careful planning to ensure continued supply. Trees get their biomass from sun energy, which is a renewable source of energy.
