The video discuss some of the factors that allowed lionfish to expand throughout the Atlantic region. Which of the following reasons were given for why the lion fish population has been able to expand so rapidly? A. The Atlantic region has fewer parasites that attack lionfish. B. The lionfish outcompete native fish for food. C. Lionfish are able to breed more frequently the native fish. D. Atlantic predatory fish don't eat lionfish. E. None of these

Suppose that researchers wanted to examine the combined effects of an introduced predator (a trout) and the trematode parasite Ribeiroia on amphibian populations. To do this, they established frog populations in each of 40 artificial ponds. Each pond was assigned at random to one of four treatments (10 ponds per treatment): 1) neither trout or parasites were added to the pond (the "No trout, no parasite" treatment); 2) no trout were added but parasites were added ("No trout, parasite added"); 3) trout were added but parasites were not added ("Trout added, no parasite"); and 4) both trout and parasites were added ("Trout added, parasite added"). Each pond contained refugia where tadpoles could avoid attack by trout, to avoid fish predators driving frog populations to extinction in an artificial pond, unlike what typically occurs in a natural pond. After two breeding seasons, the researchers estimated the density of frogs in each pond. The results are shown in the table and the figure.…

In spadefoot toads there are two forms of the tadpoles: omnivores and carnivores.  Environmental factors such as population density, oxygen concentration, and availability of food determine which form any particular tadpole takes.  Consider the situation below. A single pair of toads produces a fertilized group of eggs in a pond.  The pond dries a bit creating two separate ponds, one is deep and the other is shallow.  All the tadpoles in the deep pond become omnivores and all the tadpoles in the deep pond become carnivores.  There is a heavy rain and the ponds become connected again and the two groups of tadpoles mix together.  The carnivores eat most of the omnivores and more of the carnivores become adult toads This is an example of Group of answer choices A. natural selection and evolution B. evolution only C. natural selection only

https://media.hhmi.org/biointeractive/click/lionfish-invasion/introduction.html This section starts explaining how scientists use the population survey data that are collected to model how the lionfish population changes over time. These models enable scientists to make predictions about population changes, which is an important element of developing plans for managing the lionfish population You'll be using the discrete-time logistic model that is described on this page in future parts of the case study, so make sure to carefully read through the explanation of this mathematical model. Even if you don't have a strong math background, this case study walks through the equation step by step.   6)Which of the following are constant terms in the discrete-time logistic model? choose all that apply a)Nt b)ΔN c)t d)K e)Δt f)rmax,d g)None of these