Which observation could be traced back to the practices of early hunter gatherer societies ? A. The use of rooftops for family gardens B. The disappearance of many large herbivores C. Air, water, and land polluted by fossil fuels D. Evidence of artificially irrigated land

The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. the ancient whale is extinct and is believed to be an ancestor of the present-day whale. what do these skulls most likely show that supports darwin’s theory of evolution? all populations can adapt and survive. only some organisms have a common ancestor. populations change slowly over time. populations rapidly become extinct.

What in scientific term why the salty popcorn causes this thirst

Ihave no idea how to solve these. plus there's another question that is 2) a 10 kilogram meteorite is collected in space and brought back to earth. it is composed of 1.25 kg of uranium-238 and 8.75 kg of lead-206. how many u-238 half lives have passed? what is the approximate age of the meteorite?