Are you optimistic or pessimistic about the future of our planet? why

Pessimistic

Explanation:

because, we are all about technology and not about helping the earth, everyone is so oblivious to the world around them and how much trouble the earth is in and will continue to be in. The science is very clear, that the planet is warming, and that this is a result of rising carbon dioxide, which has a fingerprint of coming from burning of fossil fuels. The trend for that has been well established and is projected into the future. The interactions of the many factors that have brought enormous change to the planet is causing. Interactions with food production systems, with weather, with plant growth, with rising sea level, all of those things vary enormously across the planet, and interact with each other.

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;