Biology, 01.08.2019 02:00, straightbarz8901
(earth/space science) (answer fast to get brainliest) why are some of the geological time periods not represented in the strata forming the grand canyon? a. the age of some of the grand canyon's layers is unknown. b. unconformities resulted in the erosion of some representative layers. c. during certain times of earth's past, sedimentary layers were not forming. d. most of the grand canyon's layers are made of igneous and metamorphic rocks.
Answers: 2
Biology, 21.06.2019 21:30, BigGirlsTheBest
Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? a. 5 b. 3 c. 7 d. 1
Answers: 1
Biology, 22.06.2019 01:30, makennahudson94
All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.
Answers: 1
Biology, 22.06.2019 06:20, mariap3504
(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.
Answers: 3
(earth/space science) (answer fast to get brainliest) why are some of the geological time periods no...
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