BIOLOGY HIGH SCHOOL

Which of the following is an example of a nonpoint source of freshwater pollution?A.) pesticide runoff from farm fields
B.) leaking toxic waste landfill
C.) sewage treatment plant
D.) factory waste piped into a stream

Answers

Answer 1
Answer:

A.) pesticide runoff from farm fields

Freshwater pollution can be defined as the contamination of inland water with substances that affect its natural use and it can be caused by chemicals, petroleum, fecal waste, sediments and fertilization. Thus, non-point pollution is the process where pollution result from many diffuse sources such as agricultural areas which drain into the wind-borne debris or rivers.

Related Questions

Patrick is observing a stained slide of muscle tissue under a microscope. He observes alternating dark and light bands inside the muscles. Which is the probable source of these muscles?A. Blood vessels B. Skeletal muscles C. Smooth muscles
How do bacteria help cows to get nutrients from grass?
What role do pigments play in the process of photosynthesis
(1 pt) Which of the following is one way that the circulatory system helps maintain body temperature? A. carrying heat around the body B. controlling the flow of blood to the skin C. carrying nutrients and energy to cells D. speeding up the blood flow to generate heat
Lichens are composed of _________ and _________ in a symbiotic relationship. a. fungi, legumes b. algae, fungi c. legumes, mollusks d. algae, mollusks

A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh positive is a trait that shows simple dominance over Rh negative and is designated by the alleles R and r, respectively. A third gene for the MN blood group has codominant alleles M and N. Which of the following is a possible phenotype for the father?
A) A negative
B) O negative
C) B positive
D) AB negative
E) impossible to determine

Answers

The answer is C) B positive.

A mother has either AA or AO genotype. Since her daughter has OO genotype, the one O allele is from a father and one is from the mother.  Thus, mother must have allele O. So mother's genotype is AO.

A mother with AO genotype will pass to her son either A or O allele. Since son is type B negative, it could inherit from mother only O allele. Son's genotype is BO. This means that he inherited from the father B allele.

Father has either BO or BB genotype. Since his daughter has OO genotype, she must inherit one O allele from the father. Thus, the father has BO genotype.

Talking of Rh, her son is type B negative. A negative Rh phenotype contains both recessive alleles r, so the mother must have allele r (she is either Rh+ heterozygous, or Rh- homozygous). The same is with father - he  is either Rh+ heterozygous, or Rh- homozygous.

The oldest forensic laboratory in the US was built by whom? Los Angeles Police Department Boston Police Department New York City Police Department Chicago Police Department

Answers

The oldest forensic laboratory in the US was built by theChicago
Police Department, but it should be noted that this quickly spread to other locations. 

Answer:

the answer is d

Explanation:

edg

What is a group of terrestrial communities that covers a large area and is characterized by certain soil

Answers

This is a biome.

Biomes really do cover large areas, for example there is one biome stretching from France to central Russia (temperate broadleaf forrest). They are characterized by a similar soil and a shared community of animals and plants.

Fish are classified as vertebrates because they havea. a brain.
b. a backbone.
c. two germ layers.
d. bilateral symmetry.

Answers

B, a backbone.

Not A, because we know some species that aren't vertebrates and have a brain. 
C. two germ layers, isn't a characteristic specific to vertebrates.
d. bilateral symmetry, no for the same reasons as A.
the answer is b) a backbone

In thinking of the pathways taken by visual information within the association cortex, the dorsal stream projects to the ________ and is involved in ________.

Answers

Answer:

posterior parietal cortex; the analysis of where an object is located in space

Explanation:

The posterior parietal cortex is responsible for the perception of object in space and where object is located in space. The signal involves the transport of visual information from the thalamus by visual primary cortex to the posterior parietal cortex.

In 2005, a large algal bloom composed of _____ caused a toxic condition known as the "red tide" which closed shellfish harvesting off of Newfoundland, Maine, and Massachusetts.a. cyanobacteria
b. diatoms
c. dinoflagellates
d. red algae

Answers

c. dinoflagellates are known to be mixotrophic plankton, which combines photosythensis and phagotrophy, or the ingestion of their prey.
Other Questions
I'm the U.S., summer is in June, July, and August because _____.
As you move from an animal's class to its order, it becomes part of a ____ group that is ____ closely related
A researcher is studying the impact of different community activities on natural resources. Which activity is correctly paired with the level of impact it has on natural resources?A.little impact when humans exclusively use fossil fuels for power needsB.great impact when humans use alternative water sources for nondrinking functionsC.little impact when humans plant different types of trees for different usesD.great impact when humans maintain a diverse diet that includes various protein sources
What is the best technique for preparing and viewing the internal structures of fungal hyphae? a) Microscopy b) Staining c) Electron microscopy d) Culturing