The passenger pigeon was found in large numbers all across north america. the last passenger pigeon died in 1914. around 300 years ago, they were the most common birds that could be seen flying in the skies. what is the most likely reason that passenger pigeons became extinct?

Agroup of plant cells was exposed to radiation, which damaged the chloroplasts and caused them to lose function. if the mitochondria were unharmed, what would happen to the overall function of the plant cells? a. the cells would not be able to make food, but would be able to release energy from biomolecules. b. the cells would not be able to replicate dna, but would be able to break down waste. c. the cells would not be able to break down waste, but would be able to replicate dna. d. the cells would not be able to release energy from biomolecules, but would be able to make food.

Development has provided electrically for less money but what may be considered a cause of nuclear power

If a keystone species is removed from an ecosystem