Answer:
skeletal muscle pump
Explanation:
it it plays a key role in the movement of blood around the body
They Widley accepted theory of planet formation, they so-called palnetsmals hypotheses, the Chamberlin--Moulton planetesimal<span> hypothesis and that of Viktor Safronov, states that </span>planets<span> form out of cosmic dust grains that collide and stick to form larger and larger bodies.</span>
Physical weathering, also known as disaggregation or mechanical weathering, refers to the category of procedures, which makes the disintegration of rocks in the absence of chemical modification. In general, the mechanical weathering takes place due to the build-up of pressure within the rocks.
However, the rocks can also get worn away by a procedure known as abrasion. Abrasion refers to the disintegration of rocks due to friction.
Answer: The answer is D: to allow maximum exposure to light and to reduce shading of lower leaves.
Explanation:
The arrangement of leaves on a Stem is known as Phyllotaxy. It is used to enable them obtain maximum exposure to sunlight.
Leaves are classified as either alternate, spiral or opposite.
Leaves with alternate pattern arise at a different point (node) on the stem. This helps reduce shading of the lower leaves.
