(( earth science ))

which process or processes are involved in the sinking of cold ocean plates into the mantle?

a.
mantle plumes acting at hot spots

b.
slab-pull acting at subduction zones

c.
ridge-push acting at mid-ocean ridge

d.
slab-pull and ridge-push acting together

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in

the ems is the abbreviation for the emergency medical services. it is a service provided by a group of medical professionals specialised doctors and other healthcare staff.

any one can call 911 in case of any medical emergency and a group of health care professional will come and give the treatment required. every day the ems staff receive many phone call, which are related to different types of medical emergencies, out of which 25-28% are exclusively related to the respiratory issues.

so, the correct answer is 25-28%.