Answer:
1. As temperature and pressure increases, density increases
Explanation:
The earth is composed of three main layers: Crust, Mantle and Core. The density or mass per unit volume of the earth's layers increases as one moves from the surface towards the interior of the earth known as the core. Also, there is an increase in pressure and temperature as depth increases. There are three main sources of heat in the earth's core: (1) conserved heat from when the planet formed and coalesced, (2) heat due to friction caused by denser core material sinking to the center of the planet, and (3) heat from the decay of radioactive elements.
The earth's core is composed almost entirely of the metals, iron and nickel. The core has an inner solid layer and a molten outer core. Iron and nickel are both very dense metals, so the core of the earth is very dense and the density increases with depth with the inner core being the most dense layer of the earth.
Answer:
Addition of a(n) methyl group to certain lysine residues of a histone protein makes the region of chromatin transcriptionally silent; addition of a(n) acetyl group to certain lysine residues makes the region of chromatin transcriptionally active.
Explanation:
The changes suffered in the expression and activity of the genes are studied by the Epigenetics.
Answer:
The correct answer is - organisms become specialized for individual tasks and communicate with each other.
Explanation:
The cells of a multicellular organism in order to maintain homeostasis which is a balance of various factors in an individual organism that helps in health. The cells of multicellular organisms help as they become specialized for particular functions.
These cells communicate with each other to regulating the homeostasis. Cells of the multicellular organism function as the team however they are interdependent.
Thus, the correct answer is- organisms become specialized for individual tasks and communicate with each other.
