It is d because pesticides run off into water, they are absorbed into soil , and they are left in the air , hope this helps :)
Answer:
hormones
Explanation:
An example of materials commonly released this way is hormones. These are chemical messengers that are sent to the pituitary gland where they are released directly into the bloodstream. The blood then carries the hormones to different organs and tissues of the body in order to exert their specific function which varies depending on the specific type of hormones being secreted.
The left coronary artery typically branches into the anterior interventricular artery and the circumflex artery.
<h3>What is the circumflex artery?</h3>
The circumflex artery is an artery that branches from the left coronary artery, which is one of the most important arteries in the body.
The circumflex artery is well known to envelop and surround all the heart muscle (cardiac muscle).
The circumflex artery is a fundamental blood vessel in the heart and its damage may have serious health problems.
Learn more about the circumflex artery here:
brainly.com/question/9036497
C.18
in middle school we are told the levels are 2,8,8 but once you reach high school, you find out the third level actaully can hokd up to 18.
The fossil record
This supports Darwin's theory of evolution, which states that simple life forms gradually evolved into more complex ones. Evidence for early forms of life comes from fossils. By studying fossils, scientists can learn how much (or how little) organisms have changed as life developed on Earth.There are gaps in the fossil record because many early forms of life were soft-bodied, which means that they have left few traces behind. What traces there were may have been destroyed by geological activity. This is why scientists cannot be certain about how life began.
Fossils provide a snap shot of the past and allow us to study how much or how little organisms have changed as life developed on Earth.
