5. Why do thorns and spines exist? * O To stop animals from eating plants
To stop insects from pollinating
To stop people from looking at plants
O To help plants stay standing upright and give them their shape

to stop animals from eating plants

Explanation:

the thorns and spines help protect the plant for example if we touch the plant it hurts same goes with animals

A. To stop animals from eating plants

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.