Fact 1: Mutations are essential for evolution to occur. Fact 2: When that occurs, several things happen. Given the two facts above, answer the question "Mutations are what to evolution?" with the following options: - Plants growth - essential - optional - competition - dangerous - non essential - voluntary - allow growth
essential

(Question)
Fact 1: Evolution occurs by a process called natural selection. Fact 2: Speciation is an extension of evolution. Given the two facts above, answer the question "What occurs by a process called natural selection?" with the following options: - competition - root growth - mitosis - meiosis - speciation - cellular respiration - Plants growth - Animal survival
(Answer)
speciation

Ques: Fact 1: Scales are used for protection by scaled animals. Fact 2: Fish scales are also composed of chitin. Given the two facts above, answer the question "Chitin can be used for protection by whom?" with the following options: - Fungi - People - Man - Fish - trees - Dogs - animal - Birds
Ans: Fish

(Q).
Fact 1: Contact between rocks over long periods of time causes rocks to smooth. Fact 2: Because of the big wave action, the rocks are very smooth. Given the two facts above, answer the question "What causes contact between rocks?" with the following options: - wind - heat - erosion - deltas - waves - motion - seasons - rivers
(A).
waves

Ques:Fact 1: Ethologists usually study how animals behave in their natural environment. Fact 2: Environments reflect native habitats. Given the two facts above, answer the question "where to ethologists usually study how animals behave?" with the following options: - landscapes - natural selection - home - habitat - fields - Summer - seasons - zoo

Ans:habitat

Fact 1: Biomass is the total mass of organisms at a trophic level. Fact 2: Trophic level refers to the organisms position in the food chain. Given the two facts above, answer the question "what is biomass the total mass of?" with the following options: - remains of prehistoric life - nutrients - dead weight - organisms on the food chain - Microscopic organisms - h2o - sub-units of species - The number of individuals
organisms on the food chain