*Question*
Natural disasters can cause animals to leave an environment, and animals hibernate or relocate to avoid harsh conditions. Given these facts, natural disasters can cause relocation to do what in an environment among the following options: - important habitats - avoid harsh conditions - locate less food - to move people - they body they live in - find bad conditions - population movement - find more predators
**Answer**
avoid harsh conditions

*Question*
The emission of sulfur dioxide causes acid rain, and sulfur in the coal becomes sulfur dioxide when burned. Given these facts, acid rain can be a result of: among the following options: - burning - citric acid - flow of electrons - fashion - acid wash - chemical changes - burning coal - Pollution
**Answer**
burning coal

*Question*
Flowers produce spores that develop into gametophytes, and all gametophytes are haploid. Given these facts, flower spores eventually develop into an entity that is: among the following options: - sperm - fertile - mammalian - ferns - fungi - development - haploid - plants
**Answer**
haploid

*Question*
Plant reproduction requires pollination, and perennial types are planted outside in spring. Given these facts, what reproduction requires pollination among the following options: - humans - They lay eggs - Tropical - bees - insects - subtropical - perennials - heterotrophs
**Answer**
perennials