Answer is C - crust, mantle, outer core, inner core.
Crust -
Crust is the <em>outermost layer</em>. The thickness of the crust is about<em> 5 - 70 km.</em>
Mantle -
Mantle is the<em> second layer</em> from the Earth's surface. Thickness is about <em>2890 km.</em>
Mantle can be divided into two parts as <em>upper mantle and lower mantle.</em>
Outer core -
The thickness is about <em>2400 km</em>. It is made from mostly <em>iron and nickel.</em>
Inner core -
The <em>innermost part</em> of the Earth is inner core. Mainly made from <em>iron-nickel alloy</em>. It is solid sphere which has a radius <em>about 1220 km</em>.
Biology is the study of life.
RRNA is part of the ribosomes that manufacturers polypeptides.
Answer:
it's heart.
Explanation:
heart is made up of cardiac tissues. this organ along with tissues pump blood to the entire body. the tissues that make up this organ is specialized in involuntary contraction and relaxation with applies enough pressure to allow steady blood flow in and out of the heart.
hope it helps. :)