A dichotomous key for trees is provided. Hikers found a tree that has large 1 point brown cones and single sharp needles. What species of tree have the
hikers found? *
1
N
a. Cones are small
b. Cones are large
a. Needles are single
b. Needles are in groups of 2 or more
a. Needles are sharp at the end
b. Needles are rounded at the end
Juniper
Go to step 2
Go to step 3
Pine
Spruce
Fir

The graph shows the amount of global warming happening in different ecosystems. which populations of organisms will likely decline the most as a result of climate change, and why? a.coral reefs because of the loss of the symbiotic algae living within their bodies b.penguin populations because the fish they eat will move into warmer waters c.mountain-dwelling birds because rising sea levels will relocate their food sources d.large cats in the rainforest because of decreased habitat loss for their prey