If mutations are essential for evolution happen, then mutations are what to evolution? Answer choices: - Plants growth - essential - optional - competition - dangerous - non essential - voluntary - allow growth
essential

(Question)
If speciation occurs by a process called natural selection, then what occurs by a process called natural selection? Answer choices: - competition - root growth - mitosis - meiosis - speciation - cellular respiration - Plants growth - Animal survival
(Answer)
speciation

Ques: If chitin can be used for protection by fish, then chitin can be used for protection by whom? Answer choices: - Fungi - People - Man - Fish - trees - Dogs - animal - Birds
Ans: Fish

(Q).
If waves cause contact between rocks, then what causes contact between rocks? Answer choices: - wind - heat - erosion - deltas - waves - motion - seasons - rivers
(A).
waves

Ques:If ethologists usually study how animals behave in their habitat, then where to ethologists usually study how animals behave? Answer choices: - landscapes - natural selection - home - habitat - fields - Summer - seasons - zoo

Ans:habitat

If biomass is the total mass of organisms on the food chain, then what is biomass the total mass of? Answer choices: - 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