List the five levels of organization in living things such as humans in order from simplest (1) to most complex (5): organ, cell, tissue, organism, organ system

Organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere. There is EVERYTHING in order. Good day.

The Characteristics of living organisms are:

There are seven activities which make organisms different from non-living things. The following are the seven characteristics of living organisms.

1. Nutrition

Living things take in materials from their surroundings that theyuse for growth or to provide energy. Nutrition is the process bywhich organisms obtain energy and raw materials from nutrients such as proteins, carbohydrates and fats.

2. Respiration

Respiration is the release of energy from food substances in all living cells. Living things break down food within their cells to release energy for carrying out the following processes.

3. Movement

All living things move. It is very obvious that a leopard moves but what about the thorn tree it sits in? Plants too move in various different ways. The movement may be so slow that it is very difficult to see.

4. Excretion

All living things excrete. As a result of the many chemical reactions occurring in cells, they have to get rid of waste products which might poison the cells. Excretion is defined as the removal of toxic materials, the waste products of metabolism and substances in excess from the body of an organism.

5. Growth

Growth is seen in all living things. It involves using food to produce new cells. The permanent increase in cell number and size is called growth.

6. Reproduction

All living organisms have the ability to produce offspring.

7. Sensitivity

All living things are able to sense and respond to stimuli around them such as light, temperature, water, gravity and chemical substances.