4.which of the following statements isn't true about the open ocean
a. the open ocean has low level nutrients
b. organisms in the deep ocean are exposedbto frigid temperatures and total darkness.
c. the open ocean begins at the low-tide mark and extends to the end of the continental shelf
d. most of the photosynthesis activity on earth occurs in the open ocean within the photic zone.

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

Parthenogenesis is a type of reproduction that does not require a mate. it’s rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods. c. it shows that these organisms share the same habitat. d. it provides evidence that these organisms suffered a genetic mutation.