Answer: ionic, covalent, metallic bonding
Ionic - ionic bond also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.
Covalent - occurs when pairs of electrons are shared by atoms.
Metallic - formed between positively charged atoms in which the free electrons are shared among a lattice of cations.
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Answer:
Alimentary tract and accessory organs
Explanation:
Regions of the digestive system can be divided into two main parts: the alimentary tract and accessory organs. The alimentary tract of the digestive system is composed of the mouth, pharynx, esophagus, stomach, small and large intestines, rectum and anus. According to
Regions of the Digestive System - SEER Training
Minerals which are good conductors of electricity are described below.
Explanation:
- metals tend to be highly efficient conductors of heat and electricity. The vast majority of elements on the periodic table are metals, and most of these fall into one of five families: alkali metals; alkaline earth metals; the very large transition metals family; and the inner transition metal families, known as the lanthanides and actinides.
- Metals are lustrous or shiny in appearance, and malleable or ductile, meaning that they can be molded into different shapes without breaking. Despite their ductility, metals are extremely durable and have high melting and boiling points. They are excellent conductors of heat and electricity, and tend to form positive ions by losing electrons.
<span>D.
It allows hummingbirds to access certain nutrients more efficiently than other species.
The long and thin beak allows the hummingbird to collect nectar from thin flowers.</span>
