3 years ago

The diagram below shows the stump of a tree whose root grew into a small crack in bedrock and split the rock apart.

Biology

2 answers:

Zina [86]3 years ago

4 0

A physical weathering k

Blababa [14]3 years ago

4 0

I would say The Answer B

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Which factors can have the greatest effect on the health of a river

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It’s the letter C.................

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The biological levels of organization range from a single cell all the way up to the biosphere in a highly structured hierarchy.

ELEN [110]

Answer:

B) Tissue is made of different types of cells.

D) Organs are made of different types of tissue.

Explanation:

The tissues are made of different types of cells. The organs are also made of different types of tissue. There is no need of same types of tissues to make organs. Thus, option (B) and (D) is correct answer.

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Explanation:

There would be unlimited number of sperms.

there would be 56 eggs. Hope it helps.

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Tay-Sachs disease is a lethal, autosomal recessive genetic disorder. If both parents are heterozygous carriers of the disease, w

rjkz [21]

Answer:

50%

Explanation:

Let's assume that the allele "T" gives the normal phenotype while the recessive allele "t" imparts the disease and is lethal in homozygous condition. The genotype of each of the two carrier parents would be "Tt". A cross between Tt and Tt would give the progeny in the following genotype ratio=

Tt x Tt= 1/4 TT: 1/2 Tt: 1/4 tt

Therefore, 1/2 or 50% progeny would be the carrier for the Tay-Sachs disease.

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3 years ago