Todd's girlfriend insisted he clean the cat litter box before he went to work at the restaurant. He was late and forgot to wash his hands afterward. As soon as he entered the kitchen, the cook threw an apron at him and told him to start plating the food. Several customers came down with flu-like symptoms after their meal. Which parasite most likely infected them? Cryptosporidium parvum Trichinella spiralis Toxoplasma gondii Giardia duodenalis

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data

Answer ! in your opinion, what are the limiting factors that might affect the growth or diversity of our ecosystem? respond to this question in claim, evidence, reasoning format. 1. make your claim (i are the limiting factors that might affect the growth or diversity of our 2. follow the claim with 3 pieces of evidence. evidence may be taken from the reading, the videos, previous lessons, or googled answers. site sources, too. 3. use reasoning to explain why you chose your evidence.

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?