Fact 1: Brain cells die quickly if their oxygen supply is cut off. Fact 2: Brain atrophy means the brain matter has shrunk, often because brain cells are dying or dead. Given the two facts above, answer the question "what causes brain atrophy?" with the following options: - Smoking - sodium - Dehydration - sweating - death - birth - Veins and arteries. - lack of oxygen
lack of oxygen

Fact 1: Astem is used to store water by some plants. Fact 2: When it rains, the roots absorb water quickly and the plants store the water in the stems. Given the two facts above, answer the question "Some plants store water after absorbing it with what?" with the following options: - the petals - Roundworms - energy - the roots - Roundworms. - the succulents - fibrous - the arms
the roots

Q: Fact 1: Mollusks are invertebrates such as the common snail. Fact 2: Invertebrates are animals who lack a backbone or spinal column. Given the two facts above, answer the question "What does an animal like a mollusk lack that many other animals have?" with the following options: - sensory neurons - Energy. - Bodily water - kinetic energy - alveoli - the skin - an organism's body - spinal column
A: spinal column

Question: Fact 1: Wind causes erosion. Fact 2: Erosion causes destruction of aquatic habitats due to siltation and flooding. Given the two facts above, answer the question "Which normal weather event can threaten aquatic habitats? " with the following options: - wind - oil - cold - Winter - hail - snow - fire - sleet
Answer: wind

*Question*
Fact 1: Producers use energy and inorganic molecules to make food. Fact 2: Food preparation for retention of nutrients is included. Given the two facts above, answer the question "Producers use energy and inorganic molecules for what?" with the following options: - neutralizing threats - dismissal of nutrients - heat produced - Transfers energy - retention of nutrients - decomposition - agriculture - iron in water
**Answer**
retention of nutrients

(Q).
Fact 1: Carbon dioxide concentrations in the air have increased over the last decade dramatically. Fact 2: Carbon dioxide is the primary greenhouse gas. Given the two facts above, answer the question "What have increased over the last decade dramatically" with the following options: - gasoline concentrations - Warm air moving into cold air - Greenhouse gases - treehouse gas concentrations - movements in the earth's crust - concentrated orange juices - genetic diversity - greenhouse gas concentrations
(A).
greenhouse gas concentrations