For each statement, indicate whether it is True or False. If you choose False, briefly explain why the statement is incorrect. True or false. Organisms higher in a food web eat everything that is lower in the food web
What will be an ideal response?
false
Reasoning: Answers will vary.
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Researchers in Alaska were interested in increasing the sockeye salmon (Oncorhynchus nerka) population in three coastal lakes. To accomplish this, the ponds were treated with fertilizers. As a result, zooplankton biomass increased between 40% and 700% in the three lakes. The substantial growth in zooplankton would suggest that prior to these experiments, these lakes were __________________.
A. eutrophic B. stratified C. subject to low light levels D. oligotrophic
Amoebas use pseudopodia for movement and
a. sexual reproduction. b. excretion. c. feeding. d. avoiding predation. e. asexual reproduction.
The facial features seen in the child pictured here are characteristic of what syndrome?
1.Down syndrome
2.Trisomy 13
3.fetal alcohol syndrome
4.Cri du chat
Hamilton explained the origin of altruism in selected insect societies with his kin selection model of sex determination. Since males are haploid and females are diploid, the workers share a very high proportion of alleles, theoretically as high as 75%. What is this called?
A. haplodiploidy B. altruism C. haploidy D. diploidy E. parthenogenesis