<span>Connective tissue often consists of relatively few cells embedded in an extracellular matrix.</span>
Answer:
it means they are only made up of one cell
<span>The membranes of neurons at rest are very permeable to K+ but only slightly permeable to Na+. The sodium – potassium pump carry both Na and K ion through the membrane to balance the leakage. Na+ is pushed out of the cell and K+ is pulled into the cell.</span>
Answer:
<em>The correct option is D) The expression of certain genes is affected by temperature.</em>
Explanation:
There are various factors which control the regulation of a gene. Temperature can be a regulatory factor for certain genes.
Probably, during the warm temperatures, the proteins regulating the fur colour to become reddish brown become activate these genes. As a result, the fur becomes evident.
In the winter, the enzymes controlling the fur might become degraded. A s a result, the genes are not able to express themselves. Hence, a white coat occurs.
When DDT is washed into water bodies from farms and absorbed by aquatic life(i.e fish) animals like eagles and hawks who continuously feed on such animals will begin to lay eggs with soft egg shells that are very fragile thus endangering the the chicks from birth
