Enters the left atrium...this is the oxygenated blood from the lungs (pulmonary)
For the second one it’s B or C, I dunno if phototropism is a real word cuz all the rest are vital.
Answer:
it is a because i did this one
Explanation:
Answer:
food chain
Explanation:
The energy flow in an ecosystem in the form of food from one organism to other is food chain!
hope this helps! :)
That depends on what you mean by ripples at the beginning of time. If you are referring to inflation of the universe caused by the Big Bang, and the subsequent "ripples", then those ripples are the leftover, background radiation from the event. If you are referring to ripples in space-time, then it still could have multiple meanings.