Plants are living creatures that benefit humans by providingoxygenand a source of food. In order for any plant to live, it needs a few basic things, otherwise it cannot grow. What Plants Need According to the Maryland branch of the Department of Natural Resources, plants need air, soil, wa...
2. What does the woman ask the man to do? A. Take care of her bags. B. Pack the food for her. C. Check the train schedule. 3. When will the man see Bob? A. This Friday. B. This Saturday. C. Next Monday. 4. Why does the man apologize? A. For the terrible food. B. ...
Why do humans get tired? Physical Needs: As living organisms, our bodies have many different physical needs that must be met in order for us to live and survive. For example, we need energy in order to fuel our bodies, and we must receive regular sleep. ...
Why do humans walk upright?Question:Why do humans walk upright?Answer and Explanation: We don't know with absolute certainty why humans walk on two legs while most other land animals walk on four. However, there are some clear advantages...Become...
内容摘录As we pored over hundreds of sticky ideas, we saw, over and over, the same six principles at work.当我们仔细研究了数以百计的粘性想法时,我们一次又一次地看到同样的六个原则在发挥作用。PRINCIPLE 1: SIMPLICITY原则1:简单性PRINCIPLE 2: UNEXPECTEDNESS原则2:意外性PRINCIPLE 3: CONCRETENESS原则3...
Polluted air and steadily rising temperatures are linked to health effects ranging from increased heart attacks and strokes to the spread of infectious diseases and psychological trauma.
Plants need it to grow, animals need it to survive, and the human body needs it to stay hydrated and keep functioning.植物靠它生长，动物赖以生存，人体需要它来保持水分，维持机体正常运作。Water is an essential building block to life and it comes to us from above.水是生命的基本组成部分，它...
The dusty red planet has fascinated us for centuries. Even as we learn more, its mysteries keep us in suspense.
live), humans have a need for love.As children, these needs are often satisfied by a small number of people, usually family members, but as we spend more time in public spaces with peers and other agents of social influence, our need for love and belongingness expands to fill these ...
Why do aggressive wasps always bother people? This article explores the problem and how to avoid it. Are humans the root of the problem? Read on to find out.