Tortoises with long necks were found to be abundant in regions that had vegetation on a higher level. A few years later, drought
hit the region and the vegetation dried up. Over time, grasses were observed in the region. Shortly thereafter, an increase in short-necked tortoises was observed in the region. What does this change in the species of tortoises suggest? A. Changes in the environment give rise to evolution of species.
B. Tortoises all around the world are now short necked.
C. Tortoises found only in this region are short necked.
D. Only changes in food availability affect the evolution of species.
The correct option is A. Living organisms depend on their environment to survive, when there are changes in the environment which are not favorable to the living organisms, it will eventually leads to the wiping out of the living organisms. As time goes on and the environment recover, the living organisms that will be found in the new environment are those who will be able to survive in it.
Answer: 1. The population will increase because of the safeness. 2. Some animals might starve or become unhealthy because lack of resource. 3. A lot of animals will eventually die.
Fungi are eukaryotic, non-vascular, non-motile and heterotrophic organisms. They may be unicellular or filamentous. They reproduce by means of spores. Fungi exhibit the phenomenon of alternation of generation.
Mountain slopes have faster erosion because it is easier for fast moving bodies of water to carry down eroded material downhill, rather than across flat land.
