Layer c is the oldest and then it’s b and a
The brain can be described to be divided into two hemispheres, the left and right hemispheres.
Corpus callosum is a bundle of flat neural fibers under the cortex in the eutherian brain lying at longitudinal fissure. The function of corpus callosum is inter hemispheric communication and connects the left and right cerebral hemisphere.
The brain majorly consists of for lobes which are frontal lobe, temporal lobe, parietal lobe and occipital lobe.
A heterogeneous mixture is a mixture of substances. In this mixture, substances are not chemically bonded just mixed, they're only together.
Examples:
A bowl of different nuts - Many types of nuts together.
A puddle of mud - Water, sand, leaves
Dirt - a bunch of particles held together.
Hope it helped1
Scientists make their hypothesis first, then they test it and collect the data
Most likely to be true about a scientific theory: It is accepted by a large scientific community.