Arthropoda and molluscs have open circulatory systems - meaning haemolymph (Their equivalent to blood) directly bathes the tissue, and isn't enclosed in blood vessels, as seen in a closed blood system, as in humans for example.
<h2><em>In general, a scientific law is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it. The explanation of a phenomenon is called a scientific theory. It is a misconception that theories turn into laws with enough research</em></h2>
Answer:
A series if reaction break and rrarrange csrbon bonds to release energy ang carbon dioxide.
Idk? I can’t see a picture to let me know if they do or not
Answer:
The limitations that nerve impulses have are
Explanation:
1). The impulses can move only in one direction.This is because the nerves are structured to allow unidirectional flow.
2). The electrical impulses are quite short acting. The message is only sent in the presence of the stimulus.
