What is an example of an event that can compromise an ecosystem? 1. global warming melting summer ice floen in the Arctic
2.solar storm hitting earths magnetosphere
3. ocean current cooling the Gulf Stream
4.rivers flooding the Amazon Basin in South America

i think the miocene epoch spans the time from 23 million to 12 million years ago.

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.

idk let me see fdfdgdg