Answer:
An engineer uses a life cycle assessment to measure how much energy is used to create a product and the impact a product has on the environment, from its creation to its final disposal. This includes several general steps to determining the overall environmental impact of a manufactured product. The first step is called an inventory analysis. In this step, the energy and materials used during a product's life cycle are calculated.
(Please help me with this)
Why has the human population of Earth been able to grow so quickly in such a short period of time?
Options:
A. People needed more help to work their farms so they had more children
B. Because of medical care, clean water and better access to nutritious food
C. Doctors have developed easier and safer ways to have babies
D. Because people stayed in one place and only moved when crowded out
Answer:
B
Explanation:
Humans need basic needs to survive so it makes sense that better medical care, clean water, and nutrition's will help humans live longer and procreate.
Why did traders barter, or exchange goods without using money?
Which of these choices states Newton’s law of universal gravitation?
A. As a planet moves around its orbit, the planet sweeps out equal areas in equal amounts of time.
B.The orbit of a planet, or other body, around the sun is an ellipse, with the sun at one focus of the ellipse.
C.The square of a planet’s orbital period is proportional to the cube of the planet’s mean distance from the sun.
D.Gravitational force increases as the mass of an object increases or as the distance between two objects
Who ever answer this correctly gets 20 points and brainliest!