Ques: You are presented with the question "Biomes that have suffered mainly from pollution have water that contains little or no what?" and the following answer choices: - Toxins - CO 2 - liquid - salt - Lead - Carbon - Acids - sulfur Now knowing that freshwater biomes have water that contains little or no salt and freshwater biomes have suffered mainly from pollution, choose the best answer.
Ans: salt

Ques: You are presented with the question "animal what is sophisticated" and the following answer choices: - exoskeleton - four limbs - communication - nervous system - hormones - in the frog family - proteins - circulatory systems Now knowing that sound can be used for communication by animals and animals use sound in sophisticated ways, choose the best answer.
Ans: communication

Ques: You are presented with the question "What occurs when gametes fuse to form a diploid zygote?" and the following answer choices: - permineralization - rapid expansion - competition - fertilization - photosynthesis - chromosomes - mutation - Leptospirosis Now knowing that fertilization occurs when a sperm and an egg fuse to form a diploid zygote and sperm and eggs are cells known as gametes, choose the best answer.
Ans: fertilization

Ques: You are presented with the question "Some what make their own membranes?" and the following answer choices: - fungi - insects - viruses - mammals - fur seals - humans - animals - sharks Now knowing that some viruses have an envelope of phospholipids and proteins and enveloped viruses make their own membranes, choose the best answer.
Ans:
viruses