SBI4U Population Characteristics

D: The bigger a species is, the longer the life expectancy it has. Bigger animals are most likely to survive because their body is always reproducing new cells. One theory suggests that size matters in the food chain, such as smaller rodents clearly don’t have a longer life expectancy because they will most likely be food.

As a set of interacting species found in the same place and functioning together, this enabling life to persist. That is essentially the definition we used earlier. A problem with this term and definition is that it is often difficult in practice to know the entire set of interacting species. A resource, in ecological terms, is something such as food, water, habitat, and sunlight, prey that is required by an organism to perform a vital function such as grow or reproduce. A consumer is an organism that consumes a resource such as predators and herbivores (Botkin, 2015). Ecosystems are collections of plants, animals, and micro-organisms interacting among themselves and with their habitat. While most ecosystems are hard to define and draw rigid boundaries around, scientists characterize them by their rock and soil types, by water features such as streams and ponds, and by the common plant and animal species which make their homes within these areas. This, most interactions between animals involve one or more competitor species competing for a resource. Ecosystem management also recognizes the influence of natural disturbances such as fire and windstorms, accepting that natural ecosystems are dynamic and change over time. Biological production is the capture of usable energy from the environment to produce

The minimum viable population size is the number of individuals needed for long-term survival of rare and endangered species, while the effective population size an estimate of the size of a population based on the numbers of females and males that successfully

This video introduces new vocabulary terms. First of all, statistics is the study of variability. Secondly, statistics is broken down into two parts descriptive and inferential. Descriptive is when you collect data and talk about it. Inferential is when you take a sample and use it to make an inference about the population. Thirdly, the video talks about the difference between population and sample. Sample is a smaller part of the population. When you take a sample and come up with an average, that average is called a statistic. When you find the average of population, that average is called a parameter. Lastly, gathering information about the whole population is called a census. In conclusion, a statistic based on a sample helps make an inference about the parameter of the whole population.

We all know that All organisms need specific resources, such as nutrients and a suitable living environment, in order to survive. But these resources are not unlimited. Since they aren't, the population of those certain organisms can decrease by death without food or nutrients, or they can migrate and go to another area suitable for living. So, populations may grow for some period of

Density is a big part of what makes a cookie. You have to make sure you add all the ingredients correctly. This is big when you are making the dough from scratch. Density is actually an object’s comparison on mass and volume. Density is the mass divided by volume. On this equation, weight/mass of something increases, but if the volume is the same, the density goes up. If the mass decreases and the volume stays the same, the density goes down. Lighter liquids are less dense unlike heavy liquids.

The population density is denoted as the number of people per unit of area, such as within a specified number of square miles or square kilometers.The arithmetic density is a common way of measuring population density. It is defined as the

The lab help us to undestand all the factors that has a impact in the population and the measures that can be taken to find an equilibrium of the population growth. The earth has a carrying capacity and this lab is useful to analayze and be aware about the effects in the environment caused by the population growth.

In this lab we had to calculate/measure the volume and mass of different types of wood and metal to then calculate the density. Density is the degree of compactness of a substance and it is found by dividing mass by volume. Density

Density is a measurement of how matter is in a certain volume/object. It is basically the compactness of an object. If the molecules are closer to each other, therefore it’s denser. If you compare a cuboid Styrofoam and a cuboid metal, the metal would weigh heavier because it is denser. The denser the object, the heavier the object and the tighter the molecules are.

You would expect to see a species growing at an exponential rate when a population has a constant birth rate through a period of time and it is never limited by food, disease, or space. WIth an exponential growth the rate of birth of a species alone can control how fast, and in some cases how slow, the population grows. A population will increase its rate and reach its maximum potential if it is filled with limitless amounts of resources. The numbers would start of slowly then pick up as quickly as the new individuals are added to the reproductive pool. Once they enter the pool the rate of growth will continue to increase over time.

Finally, with the morpheme density, and its definition. Density means how full of particles a substance is. Think of it like this. If a backpack has one book in it, it is not very dense. But if that same

Density is the measurement of an object that has a relative mass and is divided by a specific volume. Mass is the amount of matter an object possesses. Volume is the amount of space of an object occupies (solid, liquid or gas.) In chemistry the term density can be described as a physical and intensive property of matter. The term intensive property means, it is independent on the size and amount of a substance. Many chemist compare different types of densities of elements and substance with water. Density can be either expressed as (g/mL) for liquids, (g/cm3) for solids, and grams per liter (g/L) for gases. (Ch. 7 Notes, Dr. Binz, Lindenwood University, 2015.) The density of water is about 1.00 g/mL. If the density of an object is less

The study conducted utilized a combination of factors that were combined into a single abundance variable, IV. The first steps towards calculating IV, was finding relative density and relative basal area. Relative density was calculated by dividing the

Population ecology studies the factors that affect the population size of one species in a certain geographical area. Four factors affect population