Will mark brainliest

1) which of the following adaptations in wooly mammoths could have best prevented their extinction?

a) shedding of fur
b) darker color of fur
c) growth of an extra layer of fur
d) increase in the thickness of fur

2) four metals were kept in contact with each other. the table below shows the initial temperature of the metals.

metal initial temperature
a 30 °c
b 42 °c
c 25 °c
d 16 °c

from which metal will heat flow into all the other metals?
a) metal a
b) metal b
c) metal c
d) metal d