ANSWER: the organisms in the air, on land, and in the water
REASONING: A <u>biosphere</u> is defined as an ecological system that comprises of all living things, and their relationships and interactions with the living and non living things around them. The first three answers only considers certain parts of the system, and the correct answer considers all parts.
<h3><u>Answer;</u></h3>
U Boat
<h3><u>Explanation</u>;</h3>
- U-boat is an anglicised version of the German word U-Boot. It is the shortening of underseaboat. It describes the submergible watercraft that they developed and used extensively for world war i.
- German began to employ U-boats to break a stalemate at sea. U-boats were traveling under water ships.
- They were used to sink British supply ships with no warning. Due to the British blockade, with it's fleet bottled up, Germany had to use U-Boats to get at the British lifeline across the Atlantic.
Most wind erosion is caused by abrasion.
1. Simple Diffusion is a passive transport in which particles pass through the plasma membrane surrounding a cell. Diffusion is the random movement of particles with the net direction of the particles being from an area of higher concentration to an area of lower concentration.
