Answer:
They ensure blood flows in one direction throughout the heart
Explanation:
The heart has 4 valves namely;
- The mitral and tricuspid valves which control the flow of blood from the atria to the ventricles
- The pulmonary and aortic valves which control the flow of blood out of the ventricles.
When blood passes through the valve, the valve prevents the back flow of the blood as the muscles of the heart contracts and relaxes.
Living things store energy through a complex process which eventually ends up in what we call fat cells, adipocytes or lipocytes. So in essence, livings things store energy in fat cells. Fat cells are the main storage location of our energy and serve as a fuel when we're physically active for a long enough time.
Answer:
one with the fewest number of genetic differences in the nucleotide sequence.
Explanation:
A cladogram is a diagram capable of showing the relationships among different species and/or group of organisms. In a cladogram, the root indicates the common ancestor, while internal nodes represent the common ancestors of each group. In consequence, this diagram can be used to establish evolutionary relationships in which the start branch points represent common ancestors shared by the organisms found in the 'branches'. Nonetheless, the length of the branches in the cladogram does not represent evolutionary distances among groups. In recent years, cladograms based on DNA sequencing data have been combined with morphological data to establish evolutionary relationships among species.
Answer:This is more of a devil's advocate question, but I place it out here because I notice that every single news article about "climate change" is negative, when the truth is that it is not and cannot be all negative.
Explanation: