Amixture of two or more substances in which the molecules of the substances are evenly mixed is call a(

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi

The illustration shown is an ovum, a female sex cell. a mutation in this cell may be passed to the woman’s offspring during a) birth. b) mitosis. c) dna replication. d) sexual reproduction

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million