Fill in the Blanks Different types of ecosystems.Online version Complete the following sentences. by Sara del Rivero Valero 1 Forest Dessert Urban Grasslands Marine 1 . are the driest and hottest ecosystems on Earth . However , they are very cold at night . 2 . ecosystems can contain deciduous or evergreen trees . 3 . are dominated by large areas of grass . There aren't very many trees in these ecosystems . 4 . ecosystems include coral reefs and shorelines . 5 . ecosystems are man - made and contain animals such as pigeons , squirrels and rat s