After mining, to reclaim the land, the depression is filled with rocks then the top is filled with loosely graded soil. Introduction of early succession plants is important before big trees can grow. The early succession plants help in the breaking down of the rocks into soil hence making the topsoil deeper to support trees.
Answer:
The reason why only 3 out of the 22 possible autosomal trisomies are seen in newborns, is because the rest of them are chromosomal abnormalities not compatible with life and thus an spontaneous abortion occurs. The embryos suffering from these trisomies do not survive for more than a few weeks in the uterus, so the miscarriage often goes unnoticed for the mother as she may not have realized she was pregnant.
The only trisomies that are allow fetuses to be born are: Patau Syndrome (trisomy 13), Edwards Syndrome (trisomy 18), and Down Syndrome (trisomy 21). Out of these three, people with Down Syndrome have the largest life expectancy.
Which organelle controls cellular activity comparable to the way the brain controls body activity? The cell membrane
Answer:
it's the outer membrane
Explanation:
because the outer membrane helps the mitochondrian with respiration
Smoking and severe sunburn are linked to cancer.Getting a severe sunburn could lead to <span>melanoma skin </span><span>cancer and smoking could lead to lung cancer.
So the answer you are looking for is A. Cancer
I hope this helps!</span>
