In general, asexual reproduction is used by organisms.
a.
underwater
b.
complex
c.
simple
d.
extinct

C.  simple

Explanation:

Simple organisms like prokaryotes which include bacteria prefer asexual mode of reproduction. There are various ways through which simple organisms can reproduce asexually like binary fission, budding fragmentation etc. The reason why simpler organisms prefer asexual mode of reproduction is because energetically it is less demanding mode of reproduction. As compared to sexual reproduction, asexual reproduction utilizes less ATPs. Apart from this, a large number of progeny can be reproduced in very short interval of time through asexual reproduction.

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.

on the planet jupiter, the acceleration due to gravity is approximately 26 m s2 , roughly 2.7 times the acceleration due