Does this equation violate the law of conservation of mass? Why or why not? 150 grams + 125 grams = 100 grams

Embryos of different species look very similar, which shows that the organisms share a ancestor.

What are the two largest greenhouse gases

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.