Answer:
Instead of a brain, echinoderms have a ring of nerves located around their mouth area that governs their nervous responses. This ring coordinates their motion, their eating, basically anything that requires nerve control.
Explanation:
I'm not sure what you mean by this but here is a diagram of a nephron!! Hope this helps?
Data would support your hypothesis
Answer:
The main disadvantage of inorganic fertilizers is that it costs much higher than the organic fertilizers. So, if someone is using fertilizers in bulk, organic fertilizers are much more cost effective.
Explanation:
