Solar cells are used to
a.

photograph sunspots.
b.

convert sunlight into electricity.
c.

convert sunlight and carbon dioxide into sugars.
d.

convert electricity into solar energy.

Which of these is not a nucleotide base found in dna?

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f

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.