Answer:
Explanation:
Two possible causes for the biggest mass extinction event in the history of our planet would be an asteroid impacting the planet and the massive volcanic activity. This mass extinction event is called the Permian-Triassic extinction. This helped many species emerge as survivors and thrive without the oppressive bigger species that died out. It hurt many species that were unable to survive the harsh conditions that resulted from everything that was happening to their habitats and food sources.
Wings of butterflies and bats
Answer:
the comb gains electrons
Explanation:
When an atom loses electrons, it has a positive charge.
When an atom gains electrons, it has a negative charge.
Therefore when the combs become negatively charged, it <em>gains</em><em> </em>electrons.
