Which of the following statements is true? A)Decomposition and weathering recycle matter in an ecosystem.

B)The total amount of energy in an ecosystem is always increasing.

C)Primary consumers break down dead organisms into essential chemicals.

D)Water is part of an open system, which means it must be continuously replenished in an ecosystem.

Toorale man murder mystery < - your lab link 1. how was the toorale man found? 2. what did archaeologists learn about the burial? why is the burial important? 3. what information were the scientists able to learn from the skeleton itself? 4. why is the question of whether the injuries came from a stone or steel weapon important? how could scientists distinguish between the different types of weapons? 5. what did the carbon dating and soil testing tell scientists about toorale man? why are the dates interesting for scientists?

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from

What organ is the first to receive nutrients that have been absorbed from the digestive tract?