BIOLOGY MIDDLE SCHOOL

Why would penguins, which are aquatic birds that live in polar regions, be unable to survive in a desert environment ?

Answers

Answer 1
Answer: because penguins need cold here look at it like this a fish lives in water why can't it live on land because it can't walk and can't breath so it would die like we can't live under water penguins can't live in a desert because penguins eat fish there are no fish in the desert and penguins live in ice bergs and enjoy swimming and sliding on there belly on ice threres no ice in the desert so therefor they would die no food because they eat fish no home and no habitat and there are a lot of snakes and stuff that would eat the penguins     

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PKU (Phenylketonuria) is an autosomal recessive disease, in which the synthesis of amino acid Tyrosine from Phenylalanine is blocked. As a result, an excess of Phenylalanine gets converted into phenylketones, which appear in the urine. In severe conditions it may also result in damage to the brain.The gene responsible for this is p, whereas the gene P is responsible for normal synthesis of Tyrosine. In a small population of Brazilian natives, the frequency of gene p, responsible for this disease, is 0.3. What must be the frequency of people who are heterozygous for this disease? ( p + q = 1, p2 + 2pq + q2 = 1) A.0.56B.0.35C.0.42

In which domains are ALL the organisms unicellular? A. Archaea and Bacteria
B. Bacteria and Eukaryota
C. Eukaryota and Archaea
D. Archaea, Bacteria, and Eukaryota

Answers

All three domains include unicellular organisms, archaea, bacteria, and eukarya.
D. Is the answer choice I would go with

Which characteristic is common in old rivers?A. Lack of tributaries
B. Location near headwaters
C. Lack of meanders
D. A low stream gradient

Answers

i think i would say (D) A low stream gradient

Which statement best represents how structure relates to function?A horse's mane is often black.

Some insects live longer than others.

Many tropical birds can be taught to speak.

Great white sharks have sharp serrated teeth for tearing into their prey.

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Answers

Answer:

The correct answer is 'D'. Great white sharks have sharp serrated teeth for tearing into their prey.

Explanation:

Living organisms inhabit different habitats. They possess unique structures which help them perform specific functions. They maybe adapted or they are born with it. Sharks are carnivorous animals who feed on other animals. They have sharp pointy teeth which helps them to tear the flesh of their prey. Some other examples of animals are:

  • Fish have gills which help them breathe under water.
  • Camel have humps which help them store water.
  • Polar bears have thick fur which helps them to keep warm in winters.

A particular species of seabird has a mutation in the gene pool that gives it a bigger beak. Individuals with this mutation can more easily break open clams and other mollusks for food. They can also defend themselves better against predators. Over time, most of the organisms in the population have big beaks. What’s this an example of?​

Answers

Answer:

Natural selection

Explanation:

Organisms with favorable traits (in this case big beaks) have a higher chance of survival than organisms with least favorable traits (small beaks). These organisms will survive, reproduce and and pass on their traits to the following generation, allowing for the organisms to adapt to their environment over time.

Answer:

This is a example of evolution.

Explanation:

What happens to the kinetic energy of a snowball as it rolls across the lawn and gains mass.

Answers

Kinetic energy of a snowball will increase as it rolls across the lawn and gains mass. We already know that Kinetic energy is directly proportional to speed. We can express kinetic energy by the formula 
Kinetic energy = 1/2 mv^2
Now as the mass increases and the velocity remains constant, the kinetic energy of the snowball is bound to increase. I hope the explanation has helped you.

Answer:

Kinetic Energy Increases

Explanation:

9. Another name for the circulatory system is the

Answers

Another name for the circulatory system is the cardiovascular system.
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One fruit fly is heterozygous for long wings, and another fruit fly is homozygous for short wings. Long wings are dominant to short wings. Using a Punnett square, find out what percent of the offspring are expected to have short wings.