Which of the following statements is true? a. every organism is made of different elements b. all living things are made of the same elements c. every species is made of different elements d. all matter is made of the same 10 elements

Look at the following answer choices and determine which belongs in the both category. testable, can be disproven explains natural phenomena, has evidence to support it prediction, tentative, one or more scientists working together well established, many different scientists working independently, highly reliable

The cluster of developing cells from conception until birth is called an

The “ecological footprint” left by a citizen of a developed nation is about four times larger than that left by a citizen of a developing nation. why is this the case?