Amoebas are single-celled organisms, which means that they are composed of just one cell. Each amoeba is a cell capable of performing all living functions by itself. They can reproduce asexually. They are protozoans with no fixed shape. Most have no hard parts and look like blobs of jelly.
Water pollution is the contamination of water bodies, usually as a result of human activities. Water bodies include for example lakes, rivers, oceans, aquifers and groundwater. Water pollution results when contaminants are introduced into the natural environment. For example, releasing inadequately treated wastewater into natural water bodies can lead to degradation of aquatic ecosystems.
Answer:
d. furcula
Explanation:
Furcula
Furcula is a synapomorphy linking dinosaurs and birds .
The furcula is the structure formed by midline fusion of clavicles and this very element is unique in the theropods as well . And is the most crucial for understanding the link between birds and the theropods .
The first suggestion was by Huxley in 1868 , and in 1870 , the key component of the debate is the presence of Frucula .
Answer:
A theory in biology that includes one or both of the statements that the cell is the fundamental structural and functional unit of living matter and that the organism is composed of autonomous cells with its properties being the sum of those of its cells.
Explanation:
A random change in the DNA that could provide the offspring with an adaptation to increase its chances of survival is Mutation.
<u>Explanation:</u>
Mutations are modifications to an organism’s DNA that generate a difference within a group by including distinct alleles. Adaptations are physical or behavioral features that deliver an organism completely adapted to its surroundings.
A mutation is a variation in a DNA sequence. Mutations can happen from DNA copying errors made while cell division, presentation to ionizing radiation, exposure to chemicals called mutagens. Germline mutations happen in the eggs and sperm and can be carried on to offspring, while bodily mutations transpire in body cells and are not carried on.
