Unit 7 Crossword

all living organisms in the area
nonliving components of an area
regions surrounding the equator
an area of calm or of very light winds
river-like flow patterns in the oceans
a biome dominated by grasses and scattered trees
the conversion of semiarid regions to desert
continuously frozen subsoil
regular back and forth movement of animals between two areas
food-obtaining behavior
what enables an animal to find particular foods efficiently
number of individuals of a species per unit area or volume
the way individuals are spaced within their area
environmental factors that restrict population growth
the maximum population size that a particular environment can sustain
helpful for predicting a population's future growth
an interaction in which one species kills and eats another
a series of reciprocal evolutionary adaptations in two species
a network of interconnecting food chains
in danger of extinction throughout a significant portion of its range