How do you find density of an irregular shape object?

Which of the following is an example of this type of co-evolution

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

Astudent analyzed ears of corn that demonstrated two traits in the f2 kernels, purple or white colors and smooth on wrinkled shapes. a tabulation of 135 individual kernels gave the following results: purple and smooth = 75 white and smooth = 28 purple and wrinkled = 24 white and wrinkled = 8 what would be the only phenotype present in the f1 ger