Question

Two species of leaf-eating lizards (species A and B) have coexisted on an isolated island for more than 10,000 years. In 1964, a third species of leaf-eating lizard (species C) was accidentally introduced by humans visiting the island. The graph below shows the population sizes of the three species since that time:
Explain the pattern of population density observed in species C. Describe the effect that the introduction of species C had on both species A and B.

Answer 1

Answer:

well from what i can see based on the data in the graph is that, since the accidental introduction of species 3 the population of the other 2 species has decreased quite a bit. While you can also observe that the population of population 3 continues to grow.

This suggests 3 possibilities to me

possibility 1. species 3 is consuming leaves just like the other 2 species causing a scarcity in food.

possibility 2. species 3 is consuming the other 2 species causing the decrease in population.

possibility 3. species 3 and the other species may be fighting over shelter, food, or water, causing more lizard fatalities.