HELPP!!

Which of these is a gymnosperm
A- mushroom
B- oak tree
C- pea plant
D-pine tree

An ecologist is studying the effects that a population of predators is having on a population of a prey. he used data from the field to produce this graph. which conclusion can draw from the graph?

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

Iguanas need to live in a habitat that is very warm, so the pet store warms their enclosures with "basking lights" which act as an artificial sun. describe how the three methods of thermal energy transfer may take place within the iguana's enclosure.