Ques:You are presented with the question "What destroys T lymphocytes?" and the following answer choices: - SNPs - tRNA - Oxygen - DDT - HIV - Infections - p53 - Water Now knowing that hIV infects and destroys helper T cells and tcells- also known as T lymphocyte, choose the best answer.

Ans:HIV
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Ques:You are presented with the question "Language can be learned through" and the following answer choices: - play - osmosis - instincts - years - Birds - a path - sent - nerves Now knowing that behaviors can be learned through play and language is a learned human behavior, choose the best answer.

Ans:play
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Ques:You are presented with the question "Arctic animals are assisted in survival by what?" and the following answer choices: - genetic diversity - anti-freeze - food and shelter - warm greetings - some invertebrates - lowered energy cost - fat tuesday celebrations - layers of fat Now knowing that staying warm has a positive impact on an animal 's survival and arctic animals have layers of fat and thick coats of fur to keep warm in the frigid Arctic climate, choose the best answer.

Ans:layers of fat
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Ques:You are presented with the question "Birch trees are wood that are used to produce what?" and the following answer choices: - sweets - ice - water - energy - heat - food - sugar - paper Now knowing that burning wood is used to produce heat and birch trees are deciduous and the wood burns hot and fast, as if soaked with oil or kerosene, choose the best answer.

Ans:
heat
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