Which of these mediums was probably used for the first map

One statements is an example of a scientific observation. another statement is an example of a scientific explanation. identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.

How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.