Answer:
The first human ancestors appeared between five million and seven million years ago, probably when some apelike creatures in Africa began to walk habitually on two legs. They were flaking crude stone tools by 2.5 million years ago. Then some of them spread from Africa into Asia and Europe after two million years ago.
Answer:
A ambulocetus is a walking whale and it is about 11-12 feet long also they had strong limbs.
Explanation:
Answer:
True
Explanation:
The organisms which sink deep into the sea usually die due to various reasons. This argument can be supported from the fact that plants which are located in the depths of the sea cannot maintain themselves as they cannot photosynthesize in the depths of the sea. As a result they die.
On the other hand, fishes and other animals which move to the depths of the sea are not adapted to live in such environments and become food for other strange animals present there.
There are at least 900 different phytochemicals, which are nonnutritive compounds in plant foods.
2. Healthy People 2020 includes a set of disease prevention and health promotion objectives for the nation to work towards.
3. Nutrients can be classified as macronutrients, micronutrients, and water.
4. Reactions that occur within cells of the body to sustain life can be referred to as metabolism.
5. Fiber is/are the portion of plant foods not fully broken down in the digestive tract.
6. For many adults, convenience is one of the primary factors influencing food choices.
7. While it is generally better to obtain nutrients from food, some people may require supplements to meet nutrient needs.
8. Obesity refer(s) to a body mass index of 30 or higher; it is a condition affecting over 35 % of American adults. refer(s) to a body mass index of 30 or higher; it is a condition affecting over 35% of American adults.
9. Kilocalories are units used to measure the amount of energy in foods.
(the answers are bolded)
The most significant uses of coal are in electricity generation, steel production, cement manufacturing and as a liquid fuel. Steam coal - also known as thermal coal - is mainly used in power generation.
