Zebra mussels (Dreissena polymorpha) are originally native to Russia. In the mid-1980's, zebra mussels were introduced into the
Great Lake region of the United States where they rapidly reproduced females can produce up to one million eggs per year. In
one zebra mussel population, most of the individuals have dark zebra-striped
shells (genotype aa) occur in 1 of every 10,000 individuals. The solid light-colored shells indicate mussels that are not hardy in
cold water temperatures (<15°C.
In a population of 10,000 mussels, how many individuals would be heterozygous and contain the recessive gene that might
potentially help rid the Great Lakes of this invasive species?
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answer; ///i believe the correct answer is (aids) acquired immune deficiency syndrome;

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.