Answer:
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them.
It should be true due to adaptations. when a bird doesn’t stay for winter weather so it adapts by migrating to the south during the cold weather
Note: Question lack information. I have added full question with answer and explanation in info-graph.
Answer:
The cycle of human heart start with end of one beat to beginning of next beat is called cardiac cycle.
Hello Kinseyantonio!
Here is the answer to your question...
It is positively charged and includes most of the atom’s mass.
I hope this helps you and have a great day!! :)