Describe two different sources of water pollution

Answers

Answer 1
Answer: Oil Spillage,The oil can cause the fish to die and it can also cause birds to lose their ability to fly. Due to the oils getting in there feathers. Then there is Microbiological which is when people drink untreated water such as lakes or ponds, this could be  viruses, bacteria, and protozoa. This can cause once again death to fish and can cause death or sickness to humans. I hoped this helped =)

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Frost wedging occurs when water seeps into a crack in a rock, freezes, and causes the crack in the rock to widen. true or false?
The proteins in the cell membrane allow substances to come or go, based on their concentrations. This is an important part of _________________, which maintains the immediate conditions necessary for life.
The protoplasm and cytoplasm of a plant are interchangeable terms
People who have albinism appear white because they cannot synthesize the pigment ____________ , so they have an increased susceptibility to ____________ .
Nina graphs the function y = ⌊x⌋ to learn the properties of the parent floor function.Find the value of y when x =5.7

Which of the following is most likely to result in an action potential at a postsynaptic neuron? Which of the following is most likely to result in an action potential at a postsynaptic neuron? A) few EPSPs and few IPSPs B)many EPSPs and many IPSPs C) few EPSPs and many IPSPs D) many EPSPs and few IPSPs

Answers

The option that is most likely to result in an action potential at a postsynaptic neuron is D) many EPSPs and few IPSPs.

If it was alive at one time it will always be considered a biotic factor

T OR F

Answers

Answer:

True I think

Explanation:

If a cell completes the cell cycle, then the resulting cells also complete the cell cycle, how many total cells have been formed?1. 2
2. 4
3. 6
4. 8
Please hurry i got 10 min left in class and dont know answer );

Answers

I think it’s 2 because the cell goes through 4 steps

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. What is the probability of having offspring that have wrinkled seeds and yellow seed color for the cross RRYY ´ RrYy?

Answers

The answer is 0 percent.

Let's represent alleles and genotypes:
R - dominant allele for round seeds,
r - recessive allele for wrinkled seeds,
Y - dominant allele for yellow seeds,
y - recessive allele for green seeds.

RR - dominant homozygote with round seeds,
rr - recessive homozygote with wrinkled seeds,
Rr- heterozygote with round seeds,
YY - dominant homozygote with yellow seeds,
yy - recessive homozygote with green seeds,
Yy * heterozygote with yellow seeds.

So, in order to have wrinkled seeds, the offspring's genotype must contain rr, and to have green seeds, the offspring's genotype must contain either YY or Yy.
According to the image, all of the offspring will have round, yellow seeds (RRYY, RRYy, RrYY, RrYy).

If RRYY and RrYy is crossed the probability of the offspring having wrinkled and yellow seed is none (zero).

Further Explanation:

Dominant character is the trait that masks the effect of the other character and is phenotypically shown. Whereas, the characters which is been masked is referred to be as recessive character.

In the given case,

• R- Denotes the dominant round seed character.

• r- Represents wrinkled recessive character.

• Y- Shows the dominant character of yellow colored seeds.

• y- Is used to represent the green color recessive trait.

Mentioned below are the possible homo and hetrozygotes of the trait;

 YY – Dominant homozygote which represents the yellow seeds.

 yy – Recessive homozygote representing green color seed.

 Yy – Dominant hetrozygote that represents yellow seeds.  

 RR – Dominant homozygote representing round seeds.

 Rr – Dominant hetrozygote representing round seeds.

 rr – Recessive homozygote representing wrinkled seeds.

In the given instance for the offspring to have wrinkled and yellow seed it should have the genotype of rrYy or rrYY.  

If the cross of RRYY and RrYy is done as shown in the punnett square; the required condition is not possible.

Learn more:

1. Learn more about meiosis brainly.com/question/1600165

2. Learn more about the process of molecular diffusion in a cell brainly.com/question/1600165

3. Learn more about human sperm and egg cell brainly.com/question/1626319

Answer Details:

Grade: High School

Subject: Biology

Chapter: Genetics- Mendalian Inheritance

Keywords:

RRYY, RrYy, round seeds, wrinkled seeds, yellow seeds, green seeds, Mendel, heterozygotes, homozygotes, dominant, recessive.

A geologist creates a model of a mountain range in order to study erosion patterns. The elevation of the tallest mountain in the actual mountain range is 10,000 feet. The height of the tallest mountain in the model is 1 foot. The elevation of the smallest mountain in the actual mountain range is 5,000 feet. What is the height of the smallest mountain in the model?0.5 feet
5 feet
0.2 feet
2.5 feet

Answers

Answer:

Option (A)

Explanation:

Here, the given question is based on the scale-model.

a height of 10,000 feet on the actual mountain range is taken equivalent to 1 foot in the model .

so we can write it as,

10,000 feet=1 feet

1 feet=(1÷ 10,000) feet

Therefore,

5000 feet={(1÷ 10,000)×5,000} feet

5000 feet=0.5 feet

So, we can determine that a height 5000 feet on the actual mountain range is equivalent to a height of 0.5 feet on the model.

Hence, the smallest mountain on the model is 0.5 feet.

0.5 feet, because 10,000/2 = 5,000 which is the smallest actual mountain in the range. therefore, the model is 1/2 = 0.5

how are highly folded membranes an advantage for the functions of cellular parts? Name an organelle that has highly folded membranes.

Answers

Answer:

Membrane folds of an organelle increase the surface area where chemical reactions occur, this is very advantageous. One organelle that has folds in the membrane is mitochondria.

Explanation:

Mitochondria are formed by two lipoprotein membranes, one external and one internal:

  • External membrane: Similar to other organelles, smooth and composed of lipids and proteins called deporins, which control the entry of molecules, allowing the passage of some relatively large.
  • Inner membrane: It is less permeable and has numerous folds, called mitochondrial ridges. These folds have a great advantage for mitochondria as they increase the surface area where chemical reactions occur.

A highly folded membrane is an advantage for the function of celluar parts because is divides pieces in the cell, creatimg an easier transportation route. An organelle with highly folded membranes is the endoplasmic reticulum.