Fact 1: Better senses have a positive impact on an animal 's survival. Fact 2: An antelope has such a fine sense of hearing that it senses danger long in advance. Given the two facts above, answer the question "Which characteristic helps an antelope survive?" with the following options: - exoskeleton - poor sense of smell - bad manners - protective bony armor - Endocrine system - excellent hearing - bad vision - Males and females
excellent hearing

Fact 1: Most invertebrates have a nervous system. Fact 2: Insects are the most common invertebrates. Given the two facts above, answer the question "What has a nervous system?" with the following options: - animals - tortoises - crocodiles - sponges - elephants - placozoans - mesozoans - insects
insects

Q: Fact 1: Competition may cause animals to fight towards members of their own species. Fact 2: When habitat is healthy, many animals can compete for resources and still coexist. Given the two facts above, answer the question "What may cause fighting within a species?" with the following options: - caring for young - deforestation - growing food - a tree falling - competing for resources - Males and females - depress neuronal excitability - making peace
A: competing for resources

Question: Fact 1: Ablack hole is formed by a high-mass star collapses. Fact 2: And, of course, the Sun is a star. Given the two facts above, answer the question "What can form a black hole if it collapses?" with the following options: - heat - a prism - nucleus - sun's heat - forces - an object - the Sun - starfish
Answer: the Sun

*Question*
Fact 1: Soil erosion means soil loss through wind. Fact 2: Soil erosion is a serious problem in production agriculture. Given the two facts above, answer the question "What can cause serious problems for production agriculture?" with the following options: - wind - rabies - fungi - mold - Acids - fire - mildew - mines
**Answer**
wind

*Question*
Fact 1: The digestive system breaks food into nutrients for the body. Fact 2: Nutrients are fuel for your body. Given the two facts above, answer the question "The digestive system breaks food down into what for the body?" with the following options: - strength - sugar - meals - fats - lipids - fuel - hunger - matter
**Answer**
fuel