Answer:
what kind of quastion is this
Explanation:
Atoms are the basic building blocks of ordinary matter. Atoms can join together to form molecules, which in turn form most of the objects around you. Atoms are composed of particles called protons, electrons and neutrons.
Answer:<em> Living organisms must maintain a constant internal environment while living in a constantly changing external environment. </em>
Explanation: Maintaining the internal environment is important because the processes that keep the cell alive can only take place under certain conditions. There are different processes that occur in the body to maintain the constant internal environment such as diffusion, osmosis, homeostasis, active transport, passive transport, endocytosis, exocytosis, etc. Homeostasis helps to maintain an equilibrium of an internal environment.
When insects fly, they expend more energy and consume more oxygen as compared to their state of rest. Insects have a tubular breathing system called tracheae, instead of lungs. The action of flight muscles pumps air through the trachea. This is how they generate extra energy while flying.
<span>3.The gene sequences of their rRNA are very different. </span>
