Which of these is not one of the four major categories of tissue?

muscle
epithelial
connective
blood
nervous

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. which punnett square represents the correct way to set up the cross rryy  ´  rryy? 

Which of the following organisms are capable of self-fertilization? a. plants b. tigers c. humans

What is characteristics of the troposphere