Most mollusks have shells, and mollusks are the second-largest invertebrate group. Given these facts, what do the second-largest invertebrate group have among the following options: - shells - a cuticle - insects - barnacles - animals - tortoises - alveoli - honeybees
shells

Bacteria can cause people to become ill, and poultry is a notorious source of bacteria that cause illness. Given these facts, poultry can cause what among the following options: - disease - chickenpox - heat - Parkinson's - murmur - illness - autism - cancer
illness

Q: If a habitat can no longer support animals then those animals will move to another area, and environmentalists say forest roads add to erosion, destroy habitat and affect animal migration. Given these facts, what do animals do when forest roads add to the erosion of their home among the following options: - Fight for their land - Die - protect them - enormous damage to homes - Stay in that area - movements in the earth's crust - Move to another area - Plant growth is reduced
A: Move to another area

Question: Erosion of soil has a negative impact on the environment, and desertification implies soil erosion. Given these facts, what has a negative impact on the environment among the following options: - deforestation - deserts - cigarettes - desertification - humans disturb it - environments - weather - harmful substances
Answer: desertification

*Question*
Electricity is used as an energy source by electrical devices, and electrical sources are potential hazards. Given these facts, what is electricity among the following options: - coiled - movement - dangerous - energy - waves - engines - a hazard - Light
**Answer**
a hazard

If the amount of available food and water decreases in an environment then animals may leave that environment to find food and water, and many animals migrate, traveling to avoid bad weather, to find food, or to reproduce. Given these facts, when food and water decreases, what increases among the following options: - energy usage - heat energy - Migration - Temperature - Pollution - forces - root growth - deforestation
Migration