[answer correctly for brainliest]
Index fossils are used to determine the relative ages of roc...
Biology, 07.03.2020 01:10, littlesami105
[answer correctly for brainliest]
Index fossils are used to determine the relative ages of rock and fossils and are also used to
A) define the boundaries between geologic periods
B) determine the absolute age of surrounding rock
C) identify the fossil species found in rock layers
D) infer evolutionary relationships between organisms
Answers: 3
Biology, 21.06.2019 19:30, seawu
Look at the following answer choices and determine which belongs in the both category. testable, can be disproven explains natural phenomena, has evidence to support it prediction, tentative, one or more scientists working together well established, many different scientists working independently, highly reliable
Answers: 1
Biology, 22.06.2019 09:30, natalie0908
Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?
Answers: 1
Biology, 22.06.2019 13:20, crazymadhatter0
Choose the incorrect statement (a) the motor end plate membrane is only capable of generating graded potentials, but it is contiguous with the skeletal muscle sarcolemma, which can generate action potentials. (b) propagation of an action potential through the t-tubules into the sarcoplasmic reticulum triggers the release of ca++ into the cytoplasm of a skeletal muscle fiber. (c) the generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron. (d) a greater amount of ach would be found in the presynaptic vesicles of a motor unit that fired several action potentials after exposure to botulinum toxin, than in a motor unit that fired several action potentials after exposure to the venom of the krait snake (which contains Ξ±-bungarotoxin).
Answers: 2
Chemistry, 31.10.2019 23:31
History, 31.10.2019 23:31