Answer:
250 years
Explanation:
The Atlantic Ocean is not static, but instead it is very active, and it is actually spreading from its central part. In its central part, this ocean has a mid-ocean ridge. This basically means that there is constant formation of new crust from the magma that comes out, and the old crust is pushed sideways as the new one is formed. On an annual level, the mid-ocean ridge is spreading out by an estimated 0.02 meters, thus that is how much the Atlantic Ocean is spreading out each year. In order to get to the result as to how many years are needed for the Atlantic Ocean to spread 500 cm, we just need to multiply the annual spreading with the number of cm in question:
0.02 x 500 =250
Thus we get a result of 250, meaning that in 250 years the Atlantic Ocean will spread out 500 cm in total.
The answer would be D. variation
<span>The question says, 'during embryonic development, if the anus develop before the mouth, the organism is a ............ The correct option is B. In deuterostome during embryonic development anus develops first from or near embryonic blastopore, mouth develops later at some distance from the blastopore or from the opposite end.</span>
Answer:
Juvenile rheumatoid arthritis
Explanation:
Arthritis is a term used to refer a group of diseases that affects the joints such as knees, wrists and fingers.
Juvenile rheumatoid Arthritis is an autoimmune disorder that affects children which means the body attacks itself by mistakenly identifying its own cells as foreign .
The cause of this response is not yet known.
Some of the symptoms of the disease include stiffness, pain, joint swelling, skin rush, fever, slowed growth and fatigue.
It has no cure but in some cases children seem to outgrow the disease.
