Answer:
Consumer and producer
Explanation:
Algae is a producer, making its own food with the sun. The fish is a consumer, consuming the algae for food.
This depends on what organism you're referring to.
Humans have 23 sets of chromosomes.
In mitosis, identical cells are being produced.
Answer: Yes, they would either need a blood relative to take DNA samples from or something the deceased had before their death such as a baby tooth or hair.