Answer:
A male elephant grabs an evening snack in Mozambique's Gorongosa National Park. Most of the park's elephants were killed for their ivory, used to buy weapons during the nation's 15-year civil war, which ended in 1992. With poaching controlled, the population is recovering.
Explanation:
Answer: Option B
Explanation:
Recycling the runoff from the irrigation system can be a sustainable practice. The word sustainable can be defined as the method which provides enough resources for today and keeps on saving the resources for the future generations as well.
The recycling of the materials can be considered as a sustainable practice as the left over can be recycled and the need of raw materials for the next process will be less than normal.
Recycling allows the extraction of useful material from the waste and using it and ensures it use again.
Hence, the correct answer would be Option B
Answer: 6 electrons
Explanation: Oxygen atom has atomic no of 8 which means it has got 8 electrons. n=2 depicts that the electrons have principle quantum no = 2. According to Afbau's rule the electrons are arranged in shells of increasing energy as follows:
Thus there are 2 electrons in 2s and 4 electrons in 2p which makes a total of 6 electrons.
