anything significant about the antler?
Males regrow their antlers every year. About one in 10,000 females also has antlers, although this is usually associated with freemartinism.
White-tailed deer
Males regrow their antlers every year. About one in 10,000 females also has antlers, although this is usually associated with freemartinism. 
how do some chemicals in plants protect them from their enemies Through allelochemicals  that influence the behavior, growth, or survival of herbivores. name some animals/species that fall under the last-mentioned category. White-tailed deer , elephants, zebras, and giraffes. how would this category be defined? A herbivore is an animal anatomically and physiologically adapted to eating plant material, for example foliage or marine algae, for the main component of its diet. where does the term come from? Herbivore is the anglicized form of a modern Latin coinage, "herbivora," cited in Charles Lyell's 1830 "Principles of Geology." who is this person mentioned here? Sir Charles Lyell, 1st Baronet, was a Scottish geologist who demonstrated the power of known natural causes in explaining Earth's history. what are some of his most renowned books? "Principles of Geology" . what did he conclude from studying volcanoes? His conclusions supported gradual building of volcanoes, so-called "backed up-building", as opposed to the upheaval argument supported by other geologists. what were his contributions to the study of glacial features? Lyell proposed that icebergs could be the means of transport for erratics. During periods of global warming, ice breaks off the poles and floats across submerged continents, carrying debris with it, he conjectured. When the iceberg melts, it rains down sediments upon the land. when was his book mentioned above published? From 1830-1833. was it criticized for any reason? Yes, the  main argument against Lyell is that he took an "a priori" approach in his work. of the plant-eating species mentioned above, what is the first one? It is a medium sized deer. where is it commonly found? North America, Central America, Ecuador, and South America , New Zealand, Caribbean,  Czechia, Finland, Romania, Serbia, Germany, and France.
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White-tailed deer [SEP] Antlers
Males regrow their antlers every year. About one in 10,000 females also has antlers, although this is usually associated with freemartinism. Bucks without branching antlers are often termed "spikehorn", "spiked bucks", "spike bucks", or simply "spikes/spikers". The spikes can be quite long or very short. Length and branching of antlers are determined by nutrition, age, and genetics. Rack growth tends to be very important from late spring until about a month before velvet sheds. Healthy deer in some areas that are well-fed can have eight-point branching antlers as yearlings (1.5 years old). Although antler size typically increases with age, antler characteristics (e.g., number of points, length, or thickness of the antlers) are not good indicators of buck age, in general, because antler development is influenced by the local environment.