What type of ion forms when an atom loses electrons

The right answer is positive ion.

Since the number of protons will be more than the number of electrons and since protons are positively charged, It'l be positively charged as well.  

Those atoms are mainly metals, Hydrogen and Carbon since they tend to lose electrons than gaining in ionic bonding because they have less than three electrons on their outermost energy shells.

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation:

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls