Explain how algae is indirectly essential to consumers in ecosystems, polar bears.

Explanation:

There are various ways in which animals bring food and energy into one group of experiences. Some species may create their own food and others will consume other creatures to get their calories.

A consumer or heterotroph is considered an individual that will get its nutrients by eating (consuming) other species. Although the sciences have many fascinating words, one of the great things is that many are based on Latin or Greek roots.

For example, since you learn that in Greek "hetero" mean "other" and "troph" mean food, heterotrophs use food, for example, to feed food to heterotrophic species.

They use the control and then energy and materials in that food to grow, reproduce and carry out all of their life activities. All animals, all fungi, and some kinds of bacteria are heterotrophs and consumers.

assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.