Circulatory system.....circulates blood (a vital delivery system of oxygen) throughout the whole body when tissues need it the most and with a constant supply.
Plicae, villi and microvilli increase the surface area for he absorption of nutrients
Answer is D: the current make up of the crust
Changes in the temperature of the Earth's core will do the following:
1. Cause the outer core to solidify
-this means that the liquid outer core which is responsible for generating the magnetic field protecting us humans from solar radiation will be gone
2. Cause the mantle to solidify
-this means that if the mantle solidifies, the plate tectonics will stop moving around, and if this happens, the earthquakes and volcanoes will not be produced anymore and also mountain ranges will not be renewed, and the earth will be flattened by erosion.
They have a range of important functions. Such functions include channeling or transporting molecules across the membrane.
If waves continuously crash down on the land over time, the shore begins to erode because of the amount of pressure constantly pushes down on it, which can cause the shore to eventually wear down.
