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daser333 [38]
3 years ago
14

Scientists observed that over the past 40 years, marmots are located at increasing elevations on mountains. What is the best exp

lanation for this observation? The marmots are adapting to the cold temperatures. Other species are competing with the marmots for their normal habitat. More snow and rain is falling at the top of the mountains. It is becoming colder at the top of the mountains. It is becoming warmer at the top of the mountains.
Biology
1 answer:
madam [21]3 years ago
6 0

Yes I’m mommy but mom is my dad and dad is my brother

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Camels have flat hoofs and valved nostrils.<br> 4.
Nady [450]

Answer:

Good to know.

Explanation:

Yeah, alrighty. Is this a true or false question? If not then ya just stating facts.

3 0
3 years ago
A random-digit dialed survey conducted in the city of long beach, california reported that a greater proportion of nonsmokers en
djyliett [7]

Answer:

The correct answer is case-control study.

Explanation:

In a case-control study, two groups of the population are used, in which one group is kept as control, and the other is known as the experimental group that encounters with a specific disease or an outcome. With the help of this study, one can expose the groups to various or single outcomes.  

In the given case, a study is done in which an advertisement on a ban on smoking is encouraged by the non-smokers at the alcohol sale points but not by smokers, in the process a random digit dialing method was used. This random digit dialing method is an illustration of a case-control study, in which the survey of the individuals is done regarding the ban on smoking.  

8 0
3 years ago
A number of marine reptiles and birds have salt glands, which have a remarkable ability to concentrate salt solutions for excret
Lemur [1.5K]

Answer:

A)100mL  B)50mL  C)The second option  D)Hypoosmotic Environment

Explanation:

The average Na concentration in the seas and oceans of the world is around 3,5% which mean that in 100 ml of sea water, there is around 3,5 grams of Na.

The weight of one mol of NaCl is 58,44 grams. For 3,5 grams of NaCl, we get 3,5/58,44 = 0,060 mol of NaCl which is 0,060x1000 = 60 mmol/100ml. According to this and the information given in the question about the secretion of the salt glands', if the average sodium concentration is 600mmol/L, we have 60*10 = 600mmol/L so it would take 100 mililiters of water to excrete.

If the average Na concentration of the salt gland's secretion were 300 mmol/L, only 50 mililiters of water would be needed to excrete the same sodium load.

The second option of secretion is hyperosmotic to seawater because the concentration is higher.

Osmoregulation is the process of balancing the amount of water and salt between the body of the organism and its surrounding environment. For salt glands to be advantageous for osmoregulation, they need to be in a hypoosmotic environment.

I hope this answer helps.

3 0
4 years ago
Match the brain function to the correct corresponding brain structure.
Vlad1618 [11]

Answer:

Memory and learning - Cerebrum

General bodily arousal - Cerebellum

Complex mental processes - Cerebral cortex

Connects two halves of brain - Cerebrum

Relax, dream, sleep - Hypothalamus

maintain homeostasis - pons

Regulates body circulation - Medulla

Emotions - Cerebrum

Tells senses - Cerebrum

tells nervous system - Cerebellum

Explanation:

Cerebrum is the largest part of the brain which controls emotion and senses of the body. It controls information of the body. Medulla Oblongata is the part of the brain which is just near the spinal cord. It regulates blood circulation. Hypothalamus is the part of brain which regulates sleep wake cycle of a person.

8 0
3 years ago
The cell cycle is divided into two phases interphase and cytokinesis is this true
Deffense [45]

Answer: no it is not true

Explanation:

3 0
3 years ago
Read 2 more answers
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