Firstly, we need to know what a healthy ecosystem is. When an ecosystem is healthy, this would mean that it could supply all the resources that all organisms present in it and with all the resources, there is diversity. Old growth forests are considered healthy because of this reason. These forests remain untouched and had remained in providing the resources needed for the organisms present in it.
Lymphoid organs in the immune system, includes the bone marrow
Answer:
<em><u> One-fourth of an inch long</u></em>
Explanation:
I hope that helps!!! :)
