Immunodeficiency occurs when the immune system is not working properly, and many cancers can cause immunodeficiency. Given these facts, many _ can cause the immune system to not work properly. among the following options: - fever - bacteria - radiation - fungi - A drug. - Allergies - cancers - Toxicity
cancers

Hormones control many cell activities, so they are very important for homeostasis, and homeostasis is the chemical equilibrium of the body. Given these facts, what is important for the chemical equilibrium of the body among the following options: - sleep - exercise - hydration - dish soap - eyesight - hormones - detergent - glucose
hormones

Q: Staying warm has a positive impact on an animal 's survival, and with a thick fur coat and 4 inches of fat a bear stays warm. Given these facts, what has a positive impact on an animal's survival among the following options: - four limbs - sensory neurons - low water availability - fur and fat - loss of food - heat energy - hormones - destruction of habitat
A: fur and fat

Question: Vertebrates are all chordates that have a backbone, and mammals are like other chordates in that they have backbones. Given these facts, what are like other vertebrates that have a backbone among the following options: - animals - sharks - vibrations - sound - mammals - alpacas - bees - cows
Answer: mammals

*Question*
Roundworms may be free-living or parasitic, and parasites are organisms that live off a host. Given these facts, aside from free-living, where else can roundworms exist among the following options: - mouth of rivers - in the sky - loose soil - our planet - Earth orbiting the Sun - live off a host - molecules - h2o
**Answer**
live off a host

(Q).
Erosion causes a river to become deeper and wider, and canyon formed as a consequence of river erosion. Given these facts, what are formed by erosion among the following options: - mountains - hills - canyons - Sediment - loose soil - rocks - soils - streams
(A).
canyons