12 grams (g) of a chemical are added to a metal. The amount A, in grams, of the chemical remaining during a reaction with a metal plate decreases by 0.5 g per second. If instead the plate
were dissolved, the amount A', in grams, of chemical remaining would decrease by half of itself
every 4 seconds. How many grams greater is A than A' after 12 seconds?

Did the universe cool off or get hotter as it expanded after the 'big bang"?

An ecosystem is shown in the illustration. assume that human activities have led to a decrease in the number of eagles. a virus attack on rabbits has led to a decrease in their population in the ecosystem. which two sentences describe likely effects on the ecosystem? 1. there’s an increase in the number of snakes and insects and a decrease in the number of frogs. 2. there’s an increase in the number of snakes and insects, and the storks face increased competition for food. 3. there’s an increase in the number of storks and a decrease in the number of snakes and insects. 4. there’s an increase in the number of frogs and a decrease in the number of storks and insects. 5. there’s a decrease in the number of snakes, insects, and frogs.

In anton chekhov’s the proposal, lomov talks about how much land he owns instead of making romantic gestures while trying to propose to natalya. which idea influences lomavs behavior