Which statement best describes the relationship between photosynthesis and cellular respiration?
photosynthesis removes carbon from the atmosphere, and cellular respiration releases carbon back into the atmosphere.
photosynthesis is part of the carbon cycle, and cellular respiration is not.
only plants perform photosynthesis, and only animals perform cellular respiration.
photosynthesis releases carbon into the atmosphere, and cellular respiration removes carbon from the atmosphere.

Which sentence best expresses the differing opinions of these two book reviews?

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.

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.