Which statements describe potential effects of using a river to irrigate a farm's field? Check all that apply. % The farmer preserves the natural habitat of the river by rerouting water from the river.
✓ Governments make rules to regulate how farms get water for their irrigation
> The rerouted river leads to the deforestation of the farmer's land,
✓ The farmer makes more money by being able to successfully grow crops.
✓ Farmers downriver get angry because now they do not have enough water to use on their farms.
Lower water levels on the river change the environment for animals that depend on the river.
1) Intro
1 Final

You will create a molecular clock model for an arthropod gene. follow these guidelines to make your model: . your timeline will span from 90 million years ago to the present. the common ancestor in your model is an arthropod that lived 90 million years ago. the gene that you'll track codes for a protein in the species venom . the dna sequence youll track contains 10 nitrogen bases. you can choose the order of the bases and where the mutations occur. this gene mutates at a rate of approximately 0.76 base pairs every 17.1 million years. to build your model,/ calculate the estimated time period it takes for 1 base pair to mutate. the first time period will only show the common ancestor. at the beginning of the second time period, three lineages will diverge from the common ancestor, each with a different mutation in their gene sequences. the first and third descendant species will survive for the rest of the timeline. the second descendant species was extinct 50 million years ago. calculate how long it will take for one full base pair mutation to occur. explain your reasoning by constructing a mathematical equation