Question

in fig BC AB , AD BA , CB =4 AD =9 find..​

Answer 1

=

2

1

×AD×AB

2

1

×BC×AB

=

AD

BC

=

8

4

=

2

1

Answer 2

Answer:

Effects of Air Pollution

High levels of air pollution can cause an increased risk of heart attack, wheezing, coughing, and breathing problems, and irritation of the eyes, nose, and throat. Air pollution can also cause worsening of existing heart problems, asthma, and other lung complications.