Which of the following provides the best example of the parts of a system working together to achieve a specific function?
A-Specialized cells in a plant’s leaf open and close in response to changing conditions.
B-Red blood cells are capable of transporting oxygen because of their chemical composition.
C-Glands in the mouth, the stomach, the pancreas, and the small intestine secrete chemicals that break down nutrients.
D-Animals that prey on other animals require the ability to move about in their environment.

The answer should be C), once again.

which are post-impressionist paintings? check all that apply?

explanation:

post-impressionism is a predominantly french art movement that developed roughly between 1886 and 1905, from the last impressionist exhibition to the birth of fauvism. post-impressionism emerged as a reaction against impressionists' concern for the naturalistic depiction of light and color.

hope this have a good day

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.