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Semmy [17]
3 years ago
11

Teens are more likely to become addicted to the nicotine in cigarettes than adults are. true or false

Biology
1 answer:
Mashcka [7]3 years ago
5 0

Answer:

Sadly it's true

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Helium has an atomic number of 2. Is the model of the helium atom above is
77julia77 [94]

Answer:

Yes, the model of the helium atom is showing an ion.

Explanation:

Helium, with an atomic number of 2, should have 2 protons and 2 electrons; however, the model only depicts 1 electron. That means the helium must have lost an electron, making it a +1 charge and an ion.

4 0
3 years ago
When Mendel crossed a plant homozygous for round seeds to another plant homozygous for wrinkled seeds, he found that all the pro
deff fn [24]

Answer:

a. The allele for round seeds is dominant to the allele for wrinkled seeds.

Explanation:

Mendel found that when two pure breeding plants that differ from each other with respect to one genetic trait are crossed, all the progeny express the phenotype of one parent. The phenotype of the other parent is not expressed in the progeny. He concluded that the genetic trait that is expressed in the F1 generation is dominant over the other which is masked in this generation.

A cross between pure breeding plants for round seeds and the wrinkled seeds obtained all the round seeded progeny. This meant that the phenotype "round" was dominant over the phenotype "wrinkled". If the allele "R" gave round phenotype and the allele "r" imparted wrinkled phenotype, the allele "R" was dominant to the "r".

3 0
3 years ago
What are the four basic plant parts
Naya [18.7K]

Answer:

(1) roots, (2) stems, (3) leaves, and (4) flowers

Explanation:

7 0
3 years ago
All members of the plant kingdom contains chlorophyll? true or false
densk [106]

Answer:

this is true

Explanation:

if it isnt in the leaves of a plant, then its in the stem, or maybe, the entire thing is green!

flowers have green stems, trees have green leaves, lily pads are green, etc.

hope this helped

4 0
3 years ago
Read 2 more answers
Which stage is the last stage of speciation?
MrRa [10]
D is the correct answer. Hope this helps.

5 0
3 years ago
Read 2 more answers
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