The half-life of protactinium-226 is 2 minutes if you started with 20 grams of pa-226 how much do you have after 8 minutes

Li Ming thinks that chlorophyll is a reactant of photosynthesis, but her classmate Julian disagrees. Who is correct, and why?

A hospitalized 10-year-old child is apathetic about eating. what is the best nursing intervention to support the child's nutrition?

Which of the following molecules can be considered a final product in the flow of information within a cell? A) DNA B) RNA C) protein D) lipid E) Protein or RNA can be the final product of a gene.

James was diagnosed with atherosclerosis, which is a pulmonary disease. a buildup of plaque on the inner lining of an artery. reduced oxygen to a organ. severe chest pain cause by restricted blood flow.

What was proposed by Wegener?

Why would an ecosystem be unable to sustain an increase in carnivores? A There is not enough prey. B The carnivores now have more space. C Plant growth increases. D It is a marine ecosystem.

What was the most important result of the meireki fire of 1567 in edo?

Scientists study the biosphere to examine the relationship between biotic and abiotic factors that impact the entire planet and the hierarchy of life.

A mangrove swamp community has the following food chain: Mangrove - mangrove tree crab - mangrove water snake - raccoon → American crocodile Which population would be most likely to increase if the American crocodile disappeared from the community?

How would you solve 5x + x - 3x > - 12