Answer: unicellular
Explanation: Euglena are unicellular organisms classified into the Kingdom Protista, and the Phylum Euglenophyta. All euglena have chloroplasts and can make their own food by photosynthesis.
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Down Syndrome is caused by a chromosomal - the trisomy of chromosome 21. The non-disjunction of the homologous chromosomes during meiosis causes some of the daughter cell to have two sets of chromosome 21. During fertilization, the resulting zygote, therefore, will have three chromosomes 21. The symptoms of this genetic disorder are; intellectual disability and stunted growth.
If this is talking about Edgar Alan Poe's Tell-Tale Heart poem then the beating heart would symbolize the narrator's guilt or sense of wrong doing
Develops through gradual process over many generations.
During middle age, the ability to hear higher-pitched sounds declines first.
Presbycusis is the aging-hearing loss that occurs as a result of the aging process. It is a slow process that affects botrh ears equally thus difficult to notice, the first signs is the inability to understand speech in noisy environments and high frequency sounds.
