In genetics, gene expression is the most fundamental level at which the genotype gives rise to the phenotype, i.e. observable trait. ... Such phenotypes are often expressed by the synthesis of proteins that control the organism's structure and development, or that act as enzymes catalyzing specific metabolic pathways.
The brain region identified lighting up during an fMRI scan in a patient with obsessive-compulsive disorder is the anterior cingulate cortex. The anterior cingulate cortex is part of the limbic system and is responsible for the emotion formation, memory, processing, compulsions and obsessions, and others.
The speed of a sound wave depends upon the medium through which it travels. In general, sound travels faster through solids than through liquids or gases. Also, the denser the medium, the slower sound will travel through it. The same sound will travel at a different speed on a cold day than it would on a warm day.
Astronomers have seen stars forming within a nebular cloud. As the nebular cloud condenses and its own gravitational attraction collapses it, heat and energy build up creating a planet.
For number 3, Queen Victoria's children and Queen Elizabeth II's descendants are Edward VII, George V, George VI
for number 4, the descendants of Philip of Greece are Alice, Victoria of Hesse, Alice of battenburg
