What type of plate boundary produces deep sea trenches?

During which era in earth's history were the first insects? mesozoic precambrian cenozoic paleozoic

One disadvantage that darwin faces today is w. enemy attacks x. natural disasters y. lack of land bridge z. high population density

Which of the following are characteristics of the boers? select all that apply. distrustful of the british won the second anglo-boer war used enslaved africans lost land to great britain because gold was found allowed to keep their country