<span> to gain insight into ecological changes that are too complex or too long-range to study directly.</span>
Answer:
Hierrachy or level of organisation in human being refers to the arrangement of biological structures from simplest to most complex.
The order of pyramid tiers are:
Cells- tissues- organs- systems- organisms.
Explanation:
Hierrachy refers the order arrangement of biological
structures from simplest to complex.
Cells refer to basic unit of life.
Tissues comprises of cells which perform specific functions. E.g epithelial tissues.
Organs refers to several tissues that join to form organs. E.g Heart, lungs.
Systems comprises of several organs. E.g digestive system.
Organisms are comprises of many body systems.
Homologous chromosomes are chromosome pairs. They are<span> alike each other in size and centromere position. The position of the genes on each chromosome is the same, but the genes do not necessarily have the same alleles within.
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