एक जलीय वातावरण में, सूक्ष्म तैरने वाले या बहने वाले जीवों (मुख्य रूप से जंतुओं) को सामूहिक रूप से क्या कहा जाता है?

Which statement describes the ecological disruption caused by invasive species in a forest ecosystem?

Which of the following processes describes the natural renewal of a forest ecosystem through seed germination or vegetative sprouting following a disruptive event?