Ascientist investigates two types of cells located in different parts in a human body. cell a contains many more mitochondria then cell b. what is the best conclusion to make from this observation? a) cell a is a eukaryote & cell b is a prokaryote. b)cell a is a plant cell & cell b is a animal cell. c)cell a does more work than cell b. d)cell a produces less energy than cell b

Mario performed an experiment to determine if photosynthesis was affected by the amount of light that a plant received. what could he have done to increase the validity of his data? reduce the number of plants. remove the 1 hour group. add a 0 hours control. measure the oxygen in liters

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.