<span>d.single-gene algae.</span>
Answer:
D- The blackcaps will begin nesting at their wintering sites in Spain or the United Kingdom, resulting in a larger blackcap population migrating back to Germany after the breeding season has ended.
Explanation:
By the inhabitants of Spain and the United Kingdom placing feeders out for the blackcaps, the birds in their nesting sites during the winter will have food to eat, meaning a bigger population of the Blackcaps when they return to their main home in Germany.
This best predicts the effect on the blackcap population if humans in the United Kingdom continue to place food in feeders during the winter.
Since the corals lack the zooxanthella that are found in tropical coral reefs because the zooxanthella require sunlight and there is no sunlight, the corals are built upwards instead of across. The polyps build the coral this way because they are filter feeders. The correct answer is C, filter feeders.
