Solar energy is a clean, renewable energy source. once a solar plant is built there is no fuel cost only maintenance. why does solar energy not play a bigger role in energy production today?
a) the technology to make solar energy is not yet available.
b) environmental groups are against solar energy as a power source.
c) the cost of maintenance still is more expensive then all other energy technologies.
d) the original cost of a solar plant still takes too long to be recovered by future savings.

Dr. kaylan is an ecologist who studies bird behavior. she sets up an experiment to test which type of food crows are most likely to eat when given a choice between walnuts, corn, and sunflower seeds. to perform her experiment, dr. kaylan places three food bins in an area frequented by cows. each bin contains one of the three food types. then, she measures how much of each food type is eaten every day for a month and summarizes the results of her experiment in the pie chart below. based on her results, dr. kaylan concludes that crows choose to eat corn more frequently than other food sources because it has a higher nutritional value. what is a reasonable alternate conclusion that can be drawn from dr. kaylan's data

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

The same agricultural practices are used in every country of the world. select the best answer from the choices provided t f