Question

Which activity might reduce habitat loss?(1 point)
Responses

replacing golf courses with farms
replacing golf courses with farms

removing invasive species
removing invasive species

draining a wetland to plant fruit trees
draining a wetland to plant fruit trees

spreading out the human population

What effect do algae blooms have on ocean ecosystems?(1 point)
Responses

increased fish population
increased fish population

decreased carbon dioxide in the water
decreased carbon dioxide in the water

decreased oxygen in the water
decreased oxygen in the water

increased underwater plant population

Which of the following do researchers think is a primary factor in the decrease of North American bird populations?(1 point)
Responses

Decreased hunting of predator species
Decreased hunting of predator species

Changes in farming practices such as draining wetlands and pesticide use
Changes in farming practices such as draining wetlands and pesticide use

Recreational hunting of bird species such as waterfowl
Recreational hunting of bird species such as waterfowl

A decrease in conservation efforts

The cones of lodgepole pine trees release their seeds when exposed to heat. Which abiotic event may benefit this plant?(1 point)
Responses

flood
flood

tornado
tornado

fire
fire

drought

Jellyfish compete with anchovies for plankton and are preyed upon by tuna and swordfish. Which change might benefit jellyfish?(1 point)
Responses

increase in swordfish
increase in swordfish

increase in anchovies
increase in anchovies

increase in tuna
increase in tuna

increase in plankton

Answer 1

Here are the best responses for each question:

1. **Which activity might reduce habitat loss?**
- **Removing invasive species**: This activity helps restore native ecosystems and supports the recovery of native species, thus reducing overall habitat loss.

2. **What effect do algae blooms have on ocean ecosystems?**
- **Decreased oxygen in the water**: Algae blooms can deplete oxygen levels when they die and decompose, leading to hypoxic (low oxygen) conditions that can kill fish and other marine life.

3. **Which of the following do researchers think is a primary factor in the decrease of North American bird populations?**
- **Changes in farming practices such as draining wetlands and pesticide use**: These practices have led to habitat loss and degradation, significantly impacting bird populations.

4. **The cones of lodgepole pine trees release their seeds when exposed to heat. Which abiotic event may benefit this plant?**
- **Fire**: Fire is a natural process that triggers seed release in lodgepole pines and can create conditions favorable for their growth.

5. **Jellyfish compete with anchovies for plankton and are preyed upon by tuna and swordfish. Which change might benefit jellyfish?**
- **Increase in plankton**: An increase in plankton availability would benefit jellyfish as it serves as their primary food source.

Feel free to ask further questions or for clarifications!