A population of oak trees growing in a region in Canada experiences a change in climate to much colder temperatures and much drier conditions than they have had for many decades. What determines how this population will change in the next few years?
traits of individuals in the present population
the ability of the present population to change itself
the importance of this population to the survival of other species ?
the population’s survival history during the last ten years
Two species are linked by a common ancestor. Suppose the lineages of these two species were traced back generation by generation and drawn on a sheet of paper to show how these two species were linked to the common ancestor. What shape would the resulting illustration most resemble?
a table
a blanket
a tree
a mountain ?
What did Lamarck’s and Darwin’s hypotheses about evolution have in common?
Changes taking place in an individual organism can be passed to offspring.?
Species evolve in response to their surroundings.
Individual organisms can change to adapt to changes in the environment.
Only inherited traits can be passed on to offspring.
A species of birds that eats only cactus is transported to an island that has a lot of seeds but only a small amount of cactus. What is most likely to happen to the birds?
Individual members of the population adapt to the variation of food supply at different rates.
The bird population grows rapidly because of the new food supply.
The species slowly adapts to the variation in food supply. ?
The species quickly adapts to the variation in food supply.
cann you help imiediatly please
The answer to the first question, "What determines how this population will change in the next few years?", is a combination of several factors.
Traits of individuals in the present population: The specific traits of the oak trees in the population will determine their ability to tolerate colder temperatures and drier conditions. If there is genetic diversity within the population, some individuals may have traits that enable them to withstand these changes better than others.
The ability of the present population to change itself: The degree to which the oak trees in the population can adapt to the new climatic conditions will also affect their survival. If the population has the capacity to evolve rapidly, through mechanisms such as genetic variations and natural selection, it may be able to adjust to the colder temperatures and drier conditions.
The importance of this population to the survival of other species: If the oak trees in this population are a keystone species or play a vital role in the ecosystem, their decline or extinction due to the changing climate could have cascading effects on other species that depend on them. This can lead to changes in the ecological dynamics and overall biodiversity of the region.
The population’s survival history during the last ten years: The previous experiences and adaptations of the population in response to various environmental factors, including climate, can provide insights into how they might respond to the new conditions. If the population has already faced challenges and survived during the past decade, it might give indications of their resilience and capacity to withstand further changes.
Regarding the second question, "What shape would the resulting illustration most resemble if the lineages of two species were traced back to a common ancestor?", the correct answer is likely "a tree." When visualizing the evolution of species, the common method is to depict it as a branching tree-like diagram, known as a phylogenetic tree. This tree shows the ancestral lineage of species, with the common ancestor at the base and the different species evolving from it represented as branching paths.
For the third question, "What did Lamarck’s and Darwin’s hypotheses about evolution have in common?", the correct answer is "Only inherited traits can be passed on to offspring." Both Lamarck and Darwin recognized that traits must be heritable in order to be passed on to future generations. Lamarck proposed the concept of inheritance of acquired characteristics, suggesting that an individual organism can pass on traits acquired during its lifetime. Darwin, on the other hand, proposed the theory of natural selection, which explains that only traits that provide a survival advantage are likely to be passed on to offspring.
Lastly, for the fourth question, "What is most likely to happen to the population of birds that eat only cactus when transported to an island that has a lot of seeds but only a small amount of cactus?", the most likely answer is "Individual members of the population adapt to the variation of food supply at different rates." As the bird population is specialized to eat only cactus, the availability of seeds in the new environment may not be sufficient to sustain the entire population. Some individual birds may be able to adapt or switch their diet to the available seeds, while others may struggle to survive. These differences in adaptation and individual variation can lead to differential survival rates and potential changes in the overall population.