The indispensable chemical element is carbon.
Answer: False
Explanation: Pitch does not depend on how fast or slow an object vibrates.
Answer:
Radioactive dating of rocks
Explanation:
Answer:
Intrusive rocks are coarse-grained in texture and crystallise slowly from magma deep in the earth's crust. Extrusive rocks are fine-grained in texture and crystallise quickly from lava on or near the earth's surface. The mineralogy determines the type of rock.
The three phases of the human ovarian cycle are:
<span><span>1. </span>Follicular phase</span>
This is a phase controlled by estradiol, during which follicles in the ovary mature.
<span><span>2. </span>Ovulation</span>
This is a phase in which eggs are released from the ovaries when the follicles rupture.
<span><span>3. </span>Luteal phase</span>
<span>This is the phase is under the control of progesterone. At the beginning of luteal phase, corpus luteum is formed and it ends in either pregnancy or luteolysis.</span>