Which would indicate the water in a lake is not safe for drinking? A. many varieties of fish in the lake B.high dissolved oxygen levels in the lake C. cold water temperature of the lake D. high turbidity levels in the lake​

The water in a lake is not safe for drinking, high turbidity levels in the lake​ Coliform bacteria occur innately in soil and in the intestines of humans and other organism.

Dissolved oxygen (DO) is the quantity of oxygen that is current in water.

Water bodies obtain oxygen from the atmosphere and from aquatic plants.

Rushing water, such as that of a fast moving stream, dissolves more oxygen than the still water of a pond or lake

Thus, option "D" is correct, high turbidity levels in the lake​.

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What is the major issue that we are faced with as discussed in this video kiss the ground What is the proposed solution? plssss

Fonseca is taking a test. She has to write about adaptations of fish in the coral reef. What should she write?
A.
that some fish in the coral reef are blind due to the absence of sunlight
B.
that some fish in the coral reef survive on marine detritus
C.
that some fish in the coral reef are colorless to protect against prey
D.
that some fish in the coral reef have flat bodies to perform sharp turns

in some flowers, red and white color is codominant. Flowers and be red ( RR), white (rr) or pink (Rr) if two pink flowers are crossed! what percentage of the offspring will also be pink ?

The graphs here show the distribution of beak depths for the ground
finches on Daphne Major, an island in the Galapagos. The bird beaks were
measured over a multi-year study, including a time period before and after
a drought. The drought reduced the supply of seeds and left most of the
seeds as thick-walled nuts that survived the drought. Analyze the data and
select the claim about natural selection and genetic diversity that is
supported by the data.

Natural selection tends to reduce genetic variation, as there was a smaller distribution
of beak depths, but it tends to select for the most fit phenotypes, as there was an
increase in average beak depth after the drought.

Natural selection tends to increase genetic variation, as there were more ground
finches after the drought, and it tends to select for the most fit phenotypes, as there
was an increase in average beak depth after the drought.

Natural selection tends to reduce genetic variation, as there was a smaller distribution
of beak depths, but it tends to select against the most fit phenotypes, as there was an
increase in average beak depth after the drought.

Natural selection tends to increase genetic variation, as the average beak size
increased after the drought, but it tends to select against the most fit phenotypes, as
there was a decrease in population size for the finches after the drought

What are possible effects warming the atmosphere?​

5. Which of the following catastrophic events usually affects only coastal regions?
A. floods
B. hurricanes

Which of the following is NOT a way to conserve and/or protect natural resources?
A throwing away plastic water bottles
B. replanting trees that have been cut down
C. taking shorter showers
D. turning the heat down at bedtime

Which of the following describes a portion of the water cycle that is not driven by
gravity? O
(1 Point)
B) Precipitation of water that has condensed from clouds
D)Water seeping into the ground to enter an aquifer
C)Water flowing in a river toward the ocean
A) Evaporation of water from the ocean to form clouds

Which human organ system’s function is most similar to the function of a cell wall in plant cells?

What is the main function of the organs shown

The diagram shows which structure of the nervous system?
Dendrite
Axon
Myelin sheath
the meninges
a vertebra
a neuron
the cerebellum

why are minerals important for our body? describe the 2 groups of minerals
​

Which of the following statements best describes what happens during exercise?
(Please explain why each of the incorrect statements are wrong. Thank you!)

A.
Blood vessels in the muscles dilate to increase blood flow.

B.
Blood vessels in the heart dilate to increase blood pressure.

C.
Blood vessels in the organs dilate to increase blood oxygen.

D.
Blood vessels in the lungs dilate to increase blood volume.

a mass extinctions is

IM TIMED PLS HELP

How does deforestation impact greenhouse gases in the atmosphere the most?

A.
Deforestation increases the build-up of greenhouse gases because the removed trees would have consumed carbon dioxide.

B.
Deforestation removes trees, which shelter organisms that release gases that purify the air.

C.
Deforestation decreases the amount of greenhouse gases because trees produce many of them.

The role of the 23S rRNA of the large ribosomal subunit of E. coli during protein synthesis is: Question 50 options: helps to form the A site within the ribosome contributes to the process of translocation during the elongation stage of protein synthesis none of these choices is correct actively forms a peptide bond by acting as a ribozyme aid in initiation of protein synthesis

Which of the following are adaptations present in plants or animals that live in the understory level of the rainforests? (Choose all that apply.)
a. large eyes to see in the darkness
b. broad leaves to catch available light
c. vines and structures to climb towards sunlight
d. thick, waxy leaves

what are the 5 main important functions of soil​

Manipulate the settings to model the scenario. Observe what happens to the
observations in the Lab Guide,
About laboratory work
Stream Slope
Gentle
Amount of Rainfall
None
Surrounding Terrain
Plain
Mountains
Check
Pause
5 of 10

Because of global climate change, arctic landscapes and ecosystems are changing rapidly and perceptibly, as the residents of Newtok, Alaska, can attest. With the land upon which they have built their homes slowly melting and sinking, they have appealed to the state and federal governments for assistance in helping them cover the costs of moving their town to a different location. Ironically,
A) the land upon which the Alaskan state government buildings are located is also melting.
B) the residents of Newtok have discovered oil on their land, making their appeal for funds less convincing.
C) a senator from Alaska has a vacation home in Newtok, Alaska, and so is personally committed to the predicament of the town.
D) decades ago, the U.S. government mandated that they and other Alaskan natives abandon a nomadic life based on hunting and fishing for sedentism.
E) the economic activity of the town of Newtok is extremely polluting and thus a big contributor to the environmental changes that have turned its residents into the first climate change refugees in the United States.

What is meant by "nutrient limitation

Why does Matt call his dog?

A)He wants to give his dog a hug.
B) He wants to take his dog for a walk.
C) He wants to give his dinner to the dog.
D) He wants his dog to go into the kitchen.

I’m not sure but do anybody know this ‍♀️

Give an example of homologous and analogous structures

If humans are really intelligent and not simply manipulated by their genes like
any other animal, why can't they do anything about overpopulation?

what organelle directs heredity

What happens to a population when its size is equal to the carrying capacity?
a. Its size fluctuates wildly.
b. It increases in size.
c. Its size stays steady.
d. It decreases in size.

Describe how heat will flow
between Part A and Part B
when the tap is opened. Draw
an arrow to illustrate the
direction of heat flow.

In ecosystems, plants transform light energy from the Sun into chemical energy when they make sugar. This sugar can then be consumed by other organisms to be used as building blocks for other molecules, such as proteins and fats, or it can be transformed into other forms of energy, such as kinetic energy, when the organism moves. Which of the following statements is supported by the above information? A. Energy can change forms, but only one kind of matter exists. B. Matter can change forms, but only one kind of energy exists. C. Matter and energy can change forms and locations in ecosystems. D. Matter and energy must always remain in the same form and location.

Select the correct answer.
What is true about the theory of punctuated equilibrium?

A. It relies on the discovery of "missing links."
B. It explains the absence of transition in fossils.
C. It portrays evolutionary change as a smooth curve.