Answer:
Most of the world's coal mines come from China, India, the United States, the European Union, and Australia.
Explanation:
- <u>China: </u>In the year 2018, China alone produced approximately 3523 million tonnes of coal. Though China is the largest producer of coal in the world, it has to import coal from other countries to fulfill its energy needs. China's share in the total coal produced in the world in the last 12 years is 39.7%.
- <u>India:</u> The production of coal in India reached approximately 716 million tonnes in the year 2018. The total amount of coal produced in India in the last 12 years makes up 7.5% of the coal produced all over the world.
- <u>The United States: </u>The coal produced in the United States in the year 2018 was approximately 702 million tonnes. The last 12 year share of the coal produced in the US is 16.2% of the total coal produced all over the world.
- <u>The European Union:</u> The countries that constitute the European Union togetherly produced approximately 490 million tonnes of coal in the year 2018. The last 12-year contribution of the EU to the total coal produced in the world is 9.2%.
- <u>Australia:</u> The production of coal in Australia for the year 2018 was approximately 481 million tonnes. Australia alone produced 6.2% coal of the total world production of coal in the last 12 years.
When organisms produce more offspring than survive, the area can become overcrowded, and they will compete for nutrients and other resources and necessities.
Answer:
The correct option is A.
group of populations that have shared a past and will have a shared future
Explanation:
This is because evolutionary species concept is a concept that indicate a form of ancestry descendants or lineage of populations that descend from the same ancestors possessing similar characteristics which were inherited from the ancestry and these traits are evident in the future.
Answer:
"Foods high in carbohydrates are an important part of a healthy diet. Carbohydrates provide the body with glucose, which is converted to energy used to support bodily functions and physical activity."
Explanation:
Answer:
The correct answer is 1.5 calories
Explanation:
A food chain is a feeding relationship between organisms. Every food chain consists of producers and different consumers. As per the question, a food chain in a mash ecosystem may consist of planktons as producers and small fish, mullet as primary consumer, bigger fish, red drum as a secondary consumer and a bird, great blue heron as a tertiary or top consumer.
As per 10 % rule of energy transfer, only 10% of the energy at each trophic level is available as food for the next trophic level. According to the question, the maximum energy available at the base (at producer level) is 1,500 calories, the primary consumer will get 10% of 1500 calories which will be 150 calories. Similarly at secondary consumer will get 15 calories and finally at tertiary consumer willet 10 % of 15 calories will be 1.5 calories. Thus, 1.5 calories are available at the tertiary consumer trophic level.
