If atoms share two , three or more pairs of electrons..they are covalent bonds..for example, methane
if the atoms share only a lone pair of electron contributed by only one of the combining atoms but shared by both ..then it is a coordinate bond ..for example, ammonium ion
I believe it’s D. If it’s not, sorry!
I think the answer is D, soil and sand creep bends the trunks of trees.
Vertebrate chordates differ from invertebrate chordates by the presence of the vertebral column.
<h3>Vertebrate vs invertebrate chordates</h3>
Chordates are of two groups - vertebrates and invertebrates.
The vertebrate chordates have vertebral columns which developed from the notochord.
The invertebrate chordates, even though possess notochords at some points in their life, do not have vertebral columns.
Vertebrate chordates include fishes, birds, reptiles, and mammals. Invertebrate chordates include the tunicates and the lancelets.
More on chordates can be found here: brainly.com/question/12406059
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