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Ostrovityanka [42]
3 years ago
11

A fossil is any natural evidence of prehistoric life that provides some idea of the size, shape, or form of the organism. A foss

il does need not to be a whole animal or plant. Broken fragments are also fossils, as are the tracks left behind by the organisms. Fossils provide important evidence of how life and environmental conditions have changed. The fossils found in rock formations of different time periods differ because the environment on Earth has changed.
A paleontologist discovers a rock slab on which the footprints of a Pennsylvania dinosaur are well preserved. What does this fossil tell us about Pennsylvania?

A) rocks used to be really soft
B) you need bone to make fossils
C) animals are preserved as fossils
D) there was a time in Pennsylvania history when dinosaur existed
Biology
1 answer:
ArbitrLikvidat [17]3 years ago
7 0

Answer:

The correct answer is option (D) there was a time in Pennsylvania history when dinosaur existed.

Explanation: A paleontologist discovers a rock slab on which the footprints of a Pennsylvania dinosaur are well preserved. This means that there was a time in Pennsylvania history when dinosaur existed in this area. Here fossil is a fragment of rock on which the footprints of dinosaur is present.

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When making a Punnett square the alleles of the mother and father are written at the top and side of the four square box. True o
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<em>It is True that when making a Punnett square the alleles of the mother and father are written at the top and side of the four square box. </em>

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Answer:

natural

Explanation:

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Insertion of a device into the muscle to measure the pressure within the muscle is monitoring of __________.
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List the 6 possible genotypes of the four blood types. Identify the parentalgenotypes that could produce children with blood typ
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Answer:

The different possible genotypes are AA, AO, BB, BO, AB, and OO. These are derived according to the A, B and O blood group model.

The table is given below:

Blood Type Genotype

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Blood Type B Genotypes BB or BO

Blood Type AB Genotype AB

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How embryonic stem cells are obtained?

Stem cells are now being collected from human embryos. In most cases, the embryos that are used have been aborted or left over from in vitro fertilization procedures. Although not technically feasible at this time, researchers expect that it is possible to clone stem cells from a patient's own somatic cells.

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Cellular therapy (CT) is the transplantation of human cells to replace or repair damaged tissue and/or cells. With new technologies, innovative products, and limitless imagination, many different types of cells may be used as part of a therapy or treatment for a variety of diseases and conditions.

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