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ladessa [460]
2 years ago
6

What is the weight of the air that is pressing down on us at sea level, in pounds per square inch?

Biology
1 answer:
horrorfan [7]2 years ago
8 0

Answer:it hard

j

Explanation:

kjukyjg

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Which of these can be found in RNA but not DNA
leonid [27]

Answer:

r u on edg

Explanation: if its edg i know it

4 0
2 years ago
Rocky Mountain juniper (Juniperus scopulorum) and one-seeded juniper (J. monosperma) have overlapping ranges. Pollen grains (whi
jarptica [38.1K]

Answer:

The correct answer is: Yes, this is an example of Reproductive Isolation.

Explanation:

  • Reproductive Isolation can be defined as the mechanism adopted by different species during the course of their evolution, due to which the individuals belonging to different species are incapable of mating with each other and producing viable offspring.
  • The given question is an example of Mechanical, Pre-zygotic Reproductive Isolation.
  • Prezygotic Isolation refers to the mechanism adopted by individuals of different species during the course of evolution such that successful fertilisation of gametes from individuals of different species never occur, hence a viable zygote is never formed.
  • Mechanical Isolation refers to the mechanism adopted by individuals of  different species during the course of evolution such that their reproductive organs or the organs that assist in the process of reproduction are incompatible to each other. Hence, the gametes of each species are unable to come in vicinity of each other.
  • Here, the pollen grain from the flower of one species of juniper is unable to form the pollen tube when its sits on the stigma of the flower of another species of juniper. This is an example of Mechanical Isolation.
8 0
3 years ago
What products from the ""light"" reactions are used in the ""dark"" reactions?
liubo4ka [24]

Answer: Photosynthesis: The process of synthesis of food form inorganic raw materials in chlorophyll

The reactants are water and carbon dioxide while glucose, water, and oxygen are products

Dark reactions occur in the grana of chlorophyll, and get energy from ATP and NADPH.

The reactants are water and carbon dioxide.

The products are organic sugar molecules

Explanation:

7 0
2 years ago
Please give me your answer please please please please please please​
Orlov [11]

Answer:

Movement.

Reproduction.

Respiration.

Responsiveness.

Excretion.

Adaptation.

All organisms have nucleic acid as the hereditary molecule.

All organisms show adaptation, which occurs at the individual level and is tightly related to homeostasis.

3 0
2 years ago
Why is DNA replication necessary in a cell ? why must it be very accurate .
kvv77 [185]
Because a cell contains only one copy of DNA “program,” it must make another copy before it divides so that each cell can have a copy .
5 0
1 year ago
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