Because of the different seasons!
yes they should have green leaves. Green leaves are green because they have chlorophyll which is needed for flowers.
no
Conifers typically have green leaves all year. 12 months.
Most conifers have green leaves year-round, so they will have green leaves in all 12 months of the year.
no not all the time enyway
No, it drops its leaves in winter. BTW no leaves are ever-green: they all fall off sometime. But some trees of bushes are evergreens. They remain green in winter.
Chloraphyll
yes
Most conifers have green leaves all year round, which means they have green leaves for all 12 months of the year. This evergreen characteristic allows them to photosynthesize and maintain their green color even during the winter months.
green leaves is good for all kind decease
No for example pine leaves are pointed and called 'needles'
YES