Describe biotic and abiotic features of earth’s six major biomes

Tundra

-permanently frozen

-plant life includes mosses, grasses, small flowers, and shrubs

-animal life includes birds, wolves, foxes and reindeer

Coniferous (Evergreen)

-cold climate

-enough rainfall for trees to grow

-animals include moose, squirrel, rabbits, and beavers

Deciduous

-moderate climate

-long growing season followed by a cold winter

-leaves of trees, such as oak and maple will fall off

-many kinds of birds and animals

Tropical Rain forest

-large amount of rainfall and hot all year

-tall trees and many kinds of plants

-many different animals

Grasslands

-moderate climate but not enough rain for trees to grow

-large herds of animals feed on the many kinds of grasses

Deserts

-temperatures are moderate or hot, but where there is very little rain

-very few plants

-lizards and coyotes find food and shelter

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.