1) If a toxin gets into an environmental system, who will be the most negatively
ID: 277721 • Letter: 1
Question
1) If a toxin gets into an environmental system, who will be the most negatively impacted accroding to the concept of biomagnification?
A) Primary producer B)Primary consumers C) Ecosystem engineers D) Tertiary consumers E) Decomposers
2) Natural selection often involves energetic trade-offs between _____.
A) Choosing how many offspring to produce over the course of a lifetime and where to live
B) Producing large numbers of gamates when using external fertilization and switching to produce fewer numbers of gamates when using internal fertilizaition.
C) Density-dependent and density-independent factors
D) High survival rates of offspring and the cost of parental care
Explanation / Answer
Hi Answer:
1) If a toxin gets into an environmental system, who will be the most negatively impacted according to the concept of biomagnifications?
Answer: E Decomposers. because due to magnification the concentration of toxin is also increase with the rise in trophic level in food chain. Maximum toxin reaches to the decomposer because they get accumulated into the body of tertiary consumers and decomposers eat them so they get maximum concentration of a toxin.
2) Natural selection often involves energetic trade-offs between _____.
Answer: Option D. (high survival rates of offspring and the cost of parental care)
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