Please help me to identity the kind of quantitative research

What is the meaning of life and everything

Amanda, a forensics expert, has been called in to examine blood samples and prints found at a crime scene. she conducts a thorough analysis of the matter using her expertise and knowledge. she then prepares forensic reports to support the police investigation. what type of evidence has amanda provided in this situation? a. real evidence b. testimonial evidence c. direct evidence d. circumstantial evidence

Which two organisms in the food web would most likely be affected by a decrease in producers, or the plants, at the bottom base of the food web?