Because of the severe impact that we impose on the land, air, and water, conservation has
become increasingly important.
Conservation is using natural resources wisely and not contributing to pollution of the land, air or water. Human activities can benefit the environment and help preserve resources.
Conservation can include small-scale clean-up projects along roadways or building fences to prevent dune erosion to large-scale beach renourishment. Planting trees is another way to support conservation as trees are too often removed without being replanted.
The phrase “Reduce, Reuse, and Recycle” has been a catch phrase of the late 20th and early 21st centuries.
In the body, thermal energy helps us to maintain a constant body temperature, mechanical energy helps us to move, and electrical energy sends nerve impulses and fires signals to and from our brains. Energy is stored in foods and in the body as chemical energy.
<span>Historic and Current are real life examples because of every language </span><span />
Answer:
1. A
2. B
Explanation:
1. In a sustainable practice, resources are used judicially to fulfill the current demand and also preserved for catering the demand of future generation. The overall objective is to save resources.
In crop rotation, the agricultural field is used effectively by growing crops with alternate nutrients and mineral demand. Also this saves the soil from getting eroded and allows the land to replenish its lost minerals and nutrients.
Hence, option A is correct
2.
This is a linear food chain and as per the sequence given in question it is clear that water fleas feed upon algae. Thus, if population of algae reduces, the population of water fleas will also decrease.
Option B is correct
Answer: b
Explanation:
All the smaller molecules are made up of the organic elements