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svetlana [45]
3 years ago
7

Earth’s magnetism is related to the circulation of molten material within Earth’s core.

Biology
2 answers:
Aloiza [94]3 years ago
6 0
True. Hope this helped! :)
Murrr4er [49]3 years ago
3 0

Answer:

True

Explanation:

The core of the earth consists of molten iron enriched with nickel. This molten iron is mainly responsible for the generation of earths magnetic field. The motion of convection currents creates a geodynamo that produces alternating magnetic field .

The molten core rotates because of rotation of earth on its axis due to which the magnetic poles reverses geographically.

Hence, the given statement is true.

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Which of the following is an example of how a species may change over time?
allsm [11]

Answer: possibly A

Explanation: B an C are not it because they are more like mutations. D humans don’t always become immune.

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3 years ago
In a cross between two heterozygous tall and purple flowers (TtPp x TtPp), what would the
Goryan [66]

Answer:

9:3:3:1

Explanation:

This question involves two different genes coding for height and flower color respectively. The first gene posseses allele T (dominant) and t (recessive) while the second gene possesses allele P (dominant) and p (recessive).

According to this question, two heterozygous tall and purple flowers are crossed i.e. (TtPp x TtPp). Each parent will produce the following gametes combination:

TtPp - TP, Tp, tP, tp

Using these gametes in a punnet square, the following proportion of offsprings will be produced:

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ttpp (short, white) = 1

Hence, the ratio of this cross is 9:3:3:1

5 0
3 years ago
- results in the evolution of offspring that are better adapted to an environment
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4 0
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