31.01.2020

Explain at least one way in which the quantity and quality of water resources have been affected by human population growth. Predict how you think the water supply will be affected by continued human population growth. Support your response with appropriate evidence and scientific reasoning.

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Biology

Select the correct answer. Maria wanted to grow a fern in her backyard. Acting on a suggestion from a friend, she collected brown dots from the underside of a fern’s leaves and then potted them. After a few days, Maria saw small fern leaves erupting from the pot. Which statement explains this phenomenon? A. The fern transitioned from gametophyte generation to sporophyte generation. B. The fern grew as a result of mitosis. C. The fern transitioned from sporophyte generation to gametophyte generation. D. The fern grew to be genetically identical

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Option A : the fern transitined from gametophyte generation to sporophyte generation.

Biology

One parrot species that feeds on large seeds nests is in the same tree as a parakeet that feeds on small seeds. How are the birds able to coexist?

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One parrot species that feeds on large seeds nests is in the same tree as a parakeet that feeds on small seeds, they occupy different niches.

Biology

We have heard that seeds are high in protein. If we were to cut open a seed and look for this store of protein under the microscope ,in which cellular structure might we find it? Why does a seed need this store of protein?

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Need this store of protein:

The seed consists of three components: embryo, endosperm (sometimes perisperm), and seed-coat. Both endosperm and embryo are the products of double fertilization, whereas the seed-coat develops from the maternal, ovular tissues. The seed habit is a significant advancement in the evolution of higher plants.

Anatomy of seed :-

Need this store of protein: The seed consists of three components: embryo, endosperm (sometimes

Seed storage proteins provide a source of amino acids and reduced N necessary for germination and early growth of the seedling.

Biology

The maltose molecule can be broken down into two individual glucose molecules with the help of an enzyme produced within a cell. Which of the following changes is most likely to slow down this reaction? Adding more maltose molecules Increasing the volume of the cell Adding more of the enzyme Increasing the pH within the cell

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The maltose molecule can be broken down into two individual glucose molecules with the help of an enzyme produced within a cell.

D).increasing the pH with in the cell.

Explaination:

The maltose molecule can be broken down into two individual glucose molecules with the help of an en

Biology

The element phosphorus is located to the right of the element magnesium along the same period in the periodic table. Which best describes the relationship between the elements? A. Magnesium has a larger atomic number. B. Phosphorus has a larger atomic mass. C. Magnesium is in the same category as phosphorus D. Phosphorus has similar chemical properties as magnesium

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B)Phosphorus has a larger atomic mass.

As we move right in the periodic table, both atomic number and atomic mass increases. Magnesium comes under S-block elements (Group 2) and Phosphorus comes under P-block elements (Group-15).

Biology

Complete the T-chart by categorizing each statement as something that would most likely be relevant to gene flow or genetic drift. Some answers will fit in both columns depending on the situation. is random is a mechanism for evolution is often related to disasters is also called “migration” deals with movement between populations

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The T-chart by categorizing each statement as something that would most likely be relevant to gene flow or genetic drift. Some answers will fit in both columns depending on the situation. is random is a mechanism for evolution is often related to disasters is also called “migration” deals with movement between populations...

Biology

A binary star system is made of stars, one of which is brighter than the other. Astronomers are able to detect the dimmer star because its gravity causes the bright star to . Astronomers can also spot the dimmer star by observing a phenomenon called a(n) binary. This happens when the dim star passes in front of the bright star.

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Astronomers are able to detect the dimmer star because its gravity causes the bright star to . Astronomers can also spot the dimmer star by observing a phenomenon called a(n) binary.

Biology

Zoe wants to replace the letters on her diagram with labels that describe how the nerves and muscles communicated with each other to trigger her reflexive response. What should her labels be? Should she eliminate any letters from this pathway?

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The nerves and muscles communicated with each other to trigger her reflexive response…

Biology

how do carbon dioxide and oxygen move in and out of a mesophyll cell? By which process- active transport, diffusion, respiration or transpiration?

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Carbon dioxide with the help of diffusion reach the other cells in the leaf and the oxygen which is produced during the process of Photosynthesis is diffused out of the leaf. Hence, diffusion is the simple process by which gaseous exchange takes place.