Abehavioral psychologist tries to train a bird to climb a tree to get a reward of a piece of fruit. at first, the bird learns how to climb the tree with its legs and beak. after a while, it starts flapping its wings and hopping around before it starts to climb. eventually, the bird flies up to the piece of fruit, even though the use of its wings prevents it from being reinforced with the fruit. according to the brelands' analysis of biological constraints, the bird is demonstrating

Consider an organism that is eukaryotic, found in both unicellular and multicellular forms, may resemble a plant but is not photosynthetic, has chitin in its cell walls, and absorbs organic nutrients from decomposing material in the environment. this organism would be classified as which of the following types of organisms? a. fungib. protozoac. bacteriad. archaea

Scenario #2 in 2001, a population of 2,500 poison dart frogs lived in the amazon rain forest. due to increased deforestation, the population dwindled to 25 frogs in 2019. new government regulations were enacted in 2022, successfully putting an end to the deforestation of the amazon rain forest. once deforestation was stopped, the poison dart frog population was able to recover. by 2050, the population reached 8,000 frogs, of that population, 20 are homozygous recessive for being spotted (ss genotype). q2- ? q- p- p2- 2pq-

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million