Explanation:
mice can bite the elephant's trunk and/or feet and they can get the elephants a surprise.
Answer:
When movement of an object occurs work is measurable.
Answer:
The majority of mutations are neutral in their effects on the organisms in which they occur. Beneficial mutations may become more common through natural selection. Harmful mutations may cause genetic disorders or cancer.
Explanation:
Answer:
The second one is correct
Explanation:
A leukocyte is responsible for the immune system
<span>Observing that fibroblasts grew better in cell culture when blood serum was added to the growth medium instead of blood plasma. Thus proving that there was a substance in serum that made it easier for fibroblasts to grow.</span>
