Pls help.. i will mark brainliest for best answer what conditions are required to create metamorphic rock?

A large amount of heat and a little amount of pressure
A large amount of heat and pressure
A little amount of heat and a large amount of pressure
A little amount of heat and pressure

Which experiment would most likely contain experimental bias

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

Homo heidelbergensis was a tall, muscular hunter, who used both tools and weapons. because h. heidelbergensis was not a gatherer/forager, but ate a varied diet including meat and fish, we would expect to see what anatomical changes?