How might environmental conditions during growth lead to the differences in early versus late wood?

Adding a new girth to the tree is called a tree ring. The new wood that is formed recently presents near the outer part while the oldest rings are smaller and near the center. The different environmental condition caused differences in new and old woods that are given as follow:

-In mid-to-high-latitude regions form rings with light-colored ring forms whereas, in the late summer or fall, the ring is darker in color and form slowly

- water availability also affects the growth which leads to the differences in the early and latewood as in areas with limited water tree-ring patterns to reconstruct regional patterns of drought by scientists. It forms wider rings during wet and cool years, and narrower during hot and dry years.

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.