Answer:
add plants and trees
Explanation:
they help hold the soil in place because of their roots
The accumulation of several mutations in the main gene on the virus's surface may be able to give H7N9 the ability to spread like human flu viruses do, passing from person to person through coughing and sneezing.
Answer:
Eukaryote cells have a membrane-bound nucleus and prokaryotic cells do not
Explanation:
