60 plz ; ( 1. ) the electronegativity difference between two oxygen (o) atoms in o=o bonds is 0 3.5 7 4 2.) an electronegativity difference of 1.7 would indicate which type of bonding? nonpolar polar covalent if one element is metal ionic if one element is metal metallic 3.) a bond between carbon (c) and oxygen (o) would be considered nonpolar covalent polar covalent ionic metallic 4.) a bond between carbon (c) and fluorine (f) would be considered nonpolar covalent polar covalent ionic metallic 5.) the only bonds in a cci4 molecule are nonpolar covalent polar covalent ionic metallic

For a to be healthy, it has to have lots of different kinds of plants and animals. all of the different types of plants and animals in an ecosystem. name four types of ecosystems from those listed in the video. b) c) d) most living things live here. all living things depend on how an ecosystem like a game of sticks? why should we build new buildings on existing land? name four extinct species from those listed in the video. b) c) d) the best way to wipe out a species is to the largest ecosystem in the world is this percent of the world is covered by water. how many of all species in the world live in the ocean? list five things you can do to increase biodiversity. b) c) d) e) how many species are we losing per hour?

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into

Complete the sentences by matching the names of trees to the appropriate blanks. to do this, drag the names on the left into the appropriate blanks in the sentences on the right. match the words in the left column to the appropriate blanks in the sentences on the right. terms may be used more than once. make certain you have filled every blank with a term before clicking submit. 1. deciduous trees lose their leaves seasonally and include trees such as maple and elm. 2. conifer leaves are generally thin and needle-like, while seeds are contained in cones. conifers include cedar and pine. 3. evergreens are plants that maintain their leaves in all seasons and include trees such as cedar, elm, and pine. 4. hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as maple, , and cedar. elm returned you filled in 2 of 10 blanks incorrectly. mango trees are tropical broad leaf plants that maintain their leaves all year long. no credit lost. try again.