Answer:
d. keystone species
Explanation:
is one that plays a pivotal role in ecosystems, e.g., species of palm or fig trees that maintain all the vertebrate frugivores in a Peruvian rainforest for 3 months of the year when other trees are not in fruit
voila. good answer no?
Answer:
The cells (Osteoclasts) are found i believe around the bone to protect it from breaking or if it already is broken those cells help remodel or fix it back in place
Hope this helps
Explanation: