Answer:
Orthocenter of a Triangle
The orthocenter of a triangle is the point where the perpendicular drawn from the vertices to the opposite sides of the triangle intersect each other.
• For an acute angle triangle, the orthocenter lies inside the triangle.
• For the obtuse angle triangle, the orthocenter lies outside the triangle.
• For a right triangle, the orthocenter lies on the vertex of the right angle.
Obviously materials<span> need to be able to </span>enter and leave cells<span>, and there are five main methods by which </span>substances<span> can move across a </span>cell<span> membrane: Lipid Diffusion. Osmosis. Passive Transport.</span>
The answer is population density
