A biologist studying a desert ecosystem observes that the population of a lizard species increases following a particularly hot, dry period that causes a snake population to decline. What could the biologist hypothesize about the roles of these two species?

Question

A biologist studying a desert ecosystem observes that the population of a lizard species increases following a particularly hot, dry period that causes a snake population to decline. What could the biologist hypothesize about the roles of these two species?  
·	 
The lizard preys on the snake.
·	 
The lizard is a parasite of the snake.
·	 
The snake and lizard use the same limiting resource.
·	 The snake is a keystone species in the ecosystem.

my answer is D

Damon · Accepted Answer

I think the snake may be a keystone species. If the snakes do not eat enough lizards the lizard population grows out of control.

😐🍁😐🍀😐🍁😐🍀 · Answer

.. is this for a test or for a PBA

Ill Manage Thx · Answer

Yes it is for the PBA but its useful info :)

Beth Lowery · Answer

The answer is the snake and lizard use the same limiting resource. Because
the lizard is out eating the food and the snakes arn`t because it is to hot for them so they are starving and the lizard are getting all of the food.