Organ systems.
With analogies it helps to make sentences. Cells compose tissues, as organs compose organ systems.
The correct answer is option B
The use of fossil fuel in harvesting of apples lies at the stage when the apples fall from the tree. When there lots of apple that has to fall from the tree and picked up for sorting. Monster machines are used for the shaking of trees vigorously so that lots of apple fall at a same time. This machine use fossil fuel for its working.
Answer:
4
Explanation:
Carbon has four valence electrons, so it can achieve a full outer energy level by forming four covalent bonds. When it bonds only with hydrogen, it forms compounds called hydrocarbons. Carbon can form single, double, or triple covalent bonds with other carbon atoms.
DNA! the question is a typical descrption of it
Answer:
Secondary succession is the series of community changes which take place on a previously colonized, but disturbed or damaged habitat. Examples include areas which have been cleared of existing vegetation (such as after tree-felling in a woodland) and destructive events such as fires.
