Answer:
C. Both (a) and (b)
Explanation:
Hunting, destroying habitats, polluting and introducing non-native species can cause extinction.
No, bigger organisms have more cells.
Its called the convolution
also known as the Gyrification of the brain, it increase the brain surface area , allowing more neuron capacitiy to process information
its located in cerebral cortex and become a place where our brains store our memories.