• IF trees were removed from the habitat of the yellow warbler, what would most likely happen to the population of the the brown-headed cowbird? A. It would increase because of increased competition with other birds. B. It would increase because of a decreased number of insects C. It would decrease because of an increased seed supply D. It would decrease because of decreased nesting area • Seeds and insects are eaten by the brown-headed cowbird for food.
What can be concluded is that longer beak birds eventually got overpopulated and would stop producing offspring’s because its in their nature to limit the amount of animals in one population. Also the decreased of small bird beaks could also have an advantage such as being able to fly faster and feed quickly on worms or insects thatmmm are floating in water. So my hypothesis of longer beak birds having a better chance feeding on floating worms and underneath ones was accurate after conducting the
Pesticides, which kill certain plants, animals, and fungi, cause another reason for the bees deaths. Even though the pesticides do not mean to kill the bees, just a small dose can cause the bee to become immobilized. The last reason is from the sugar syrup that beekeepers use to save money. This syrup gives the bees as much energy as real honey but it causes a short life span. All of these reasons and much more cause bees to lose their lives and most of them get caused by
As omnivores face high extinction rates, they may not have sufficient time to undergo speciation and form 2 different species before they go extinct. However, omnivores have not completely vanished due to high transition rates into omnivory. This would only occur when there is low availability of a preferred food source. For instance, an herbivore will only eat plants. Yet, when there are a low number of plants in the environment, herbivorous birds that can also take other food
1. I would say that a limiting nutrient is anything that is necessary for growth, but which can cause problems if there is an excess. For example, phosphorus is necessary for plants to grow, but too much can probably lead to problems. It is normal for a lake like Lake Erie to have phosphorus in the water, but since there is too much, the algae is growing out of control. Phosphorus is a “limiting nutrient” because it is only required in small amounts for proper growth and balance in the ecosystem.
Also, the animals may become more dominant because there is no longer a natural predator to fear. Part III: Question) The mesopredator population increased dramatically after the coyotes were taken out of the area. Prediction) The rodent population may have decreased more over time after the treatment because the larger mesopredator animals would need a food source and rodents are at bottom of the food web. Part IV: Question) The primary factor controlling rodent population growth may be the fact that there is longer a large number of predators for them
Even though the movie is animated, it is a great representation of what our environment would look like without bees. The bee population has been declining over the past few years. The bee movie is basically what would happen if we did not have bees. They are great pollinators and they spread seeds. If we didn’t most of the plants we have, including farm crops and any type of garden, would die off.
After putting my organisms in an environment, the organisms with the color that best blended with the environment’s color would increase in numbers. Whereas, organisms with a dissimilar or opposite color to the environment would die-off over time. The reason why organisms that could better blend in with the environment flourished, while the organisms who stood out in the environment died is because of natural selection. The organism that could better blend in would be harder for predators to find, thus increasing its chances of living and reproducing. While the organisms that stood out would have a higher chance of being eaten or
Due to poaching, your favorite animals might be getting killed each day slowly decreasing their population, even though there are laws that are supposed to prevent this. Studies show that thousands of animals are getting killed each year and the hunters are not getting enough discipline for their actions. Though, they should not get the death penalty, they should at least get some type of restraint. Although many people think poachers should not get extreme punishment for their crimes, poaching laws should become harsher because killers are not getting enough retribution, people are wearing animals as clothes, and species are getting endangered. Some may say that poachers should not get death penalty for their crimes: however, many people do not realize that the hunters are not getting enough punishment.
When a species population is reduced in size, it loses the rare alleles needed to make its species thrive in future generations (Primack), the loss or decline in the genotypes of a species creates weak offspring. Expanding on the population bottleneck we have the founder effect that is occurring, as populations become small and smaller we leave a select few to carry on the population through their breeding effects. Population bottlenecks have more of a pronounced effect when populations are reduced below ten individuals for several generations (Primack). Bottlenecks caused by catastrophic events or periods may have a rapid change in population, but species can overcome this bottleneck in future generations. The reason, in a rapid or mass removal of a species those that remain, have not suffered from genetic drifting or loss of alleles and those small in number the species remains strong.
Likewise, the lions will have a decrease in food supply as well, since there are less caracals, so they too will decrease in population, though they also have other animals to feed off of. In this food chain, if the primary consumers, or the savanna hares, were decreased in population, the grass would experience growth, while the caracals and lions will decrease in
However, there are also many points that suggest leaving the Africanized bees alone, or rather utilizing them to suit our needs. As previously mentioned, the Africanized Honeybee produces even more honey than the European honeybee; being less picky about flowers, travelling further from the hive, foraging for longer each day and in harsher conditions and consuming less of the honey they collect than the European bees (Sears,