Describe what will occur the population if it increases in number when food is scarce?

Answers

Answer 1
Answer:

Answer:

more people will die

Explanation:

If you have a big population and little food mor peple will die.

Answer 2
Answer: There will also be riots in the streets, criminals acts will increase, this could come from stealing to murdering for food, the animal kingdom will basically go near extinction if the government can’t control its people from hunting, ultimately governments might collapse under the demands of the people.

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Stereoscopic vision, grasping hands and flat nails rather than claws seem to be good adaptations to living in trees. However, some scientists have hypothesized that these traits were more likely selected for catching small prey. Why?

Answers

Answer:

This is due to the general nature of the body's features.

Explanation:

The traits are important in the survival of the creatures. For example, a keen vision is needed to spot prey that is several meters or kilometers away. In addition, the claws serve different functions. For example, the claws are there to rest on the patch of the tree and hold firmly. In addition, the claws are for tearing prey. Further, the claws are for holding and lifting prey and suffocating it if necessary.

Suppose that you began a one-year study of tuberculosis (TB) in St. Petersburg on January 1st, 2018. You enrolled 200 residents in your study and checked on their TB status on a monthly basis. At the start of your study on January 1st, you screened all 200 residents. Upon screening, you found that 10 of the healthy residents were immigrants who were vaccinated for TB and so were not at risk. Another 10 residents already had existing cases of TB on January 1st. On February 1st, two residents developed TB. On April 1st, three more residents developed TB. On July 1st, three of the residents who had existing TB on January 1st died from their disease. The study ended on December 31, 2018. Assume that once a person gets TB, they have it for the duration of the study, and assume that all remaining residents stayed healthy and were not lost to follow-up.What was the prevalence of TB in the screened community on January 1st?

Answers

Answer:  5%

Explanation:

The Prevalence rate is the term used to describe the percentage of a population that have contacted the disease being tested for. It is usually done over a certain period or a certain time.

The prevalence of TB in the screened community on January 1st therefore is;

= Number of infected/ No. of Tested residents

= 10/200

= 5%

. In a replicating DNA molecule, the region in which parental strands are separating and new strands are being synthesized is called a(n)

Answers

Answer:

replication fork

Explanation:

The deoxyribonucleic acid (DNA) is a double-stranded helix composed of two long chains of nucleotides. The replication fork is a Y-shaped structure by which both DNA strands are separated in order to be replicated during cell division. In a cell, DNA replication starts at specific sites in the genome referred to as 'origins of replication'. A replication fork is generated by helicase enzymes that unwind and separate the DNA double helix strands by interrupting hydrogen bonds that hold the two DNA strands together. These DNA strands act as templates for the leading and lagging DNA strands. During DNA replication, the leading strand is synthesized continuously in the same direction as the replication fork, while the lagging DNA strand is synthesized in a direction away from the replication fork, in small pieces of DNA called Okazaki fragments.

What are physical characteristics that help an organism survive

Answers

Answer:

Special characteristics adapted by specific animals allow them to carry out unique abilities in order to survive. For instance, a cheetah's long tail helps it balance when running at rapid speed in order to hunt. Or an arctic woolly bear caterpillar is able to be frozen and fill it's body with an antifreeze hormone that allows it to survive temperatures below freezing.

Salmon fish hatcheries add a harmless perfume (morpholine) to a stream when they release young fish. When the fish mature, they attract them back to the home stream by using this chemical (in nature the fish smell the unique odors of soil and trees along the home stream). In effect, the hatchery biologist is usingA. the fish's inborn instincts to relocate its own stream.
B. the fish's inborn instincts to relocate its own stream.
C. an experiment based on the ability of fish to learn by trial and error.
D. chemotropisms.

Answers

The options are not complete

Salmon fish hatcheries add a harmless perfume (morpholine) to a stream when they release young fish. When the fish mature, they attract them back to the home stream by using this chemical (in nature the fish smell the unique odors of soil and trees along the home stream). In effect, the hatchery biologist is using

A. the fish's inborn instincts to relocate its own stream.

B. the fish's inborn instincts to relocate its own stream.

C. an experiment based on the ability of fish to learn by trial and error.

D. chemotropisms.

E. Imprinting

Answer:

E. Imprinting

Explanation:

Imprinting is kind of rapid responsive learning occurring at a particular stage in life, whereby the organism establishes a behavioral pattern such as recognition or attraction to it kinship or a substitute.

In the Salmon fish hatcheries(a building where hatching of fish or poultry eggs is artificially controlled for commercial purposes), the addition of a harmless perfume (morpholine) to a stream when they release young fish is a substitute to the Salmon fish kinship. When the fish mature, i.e at a particular stage of their life, they attract them back(a form of attraction to it own kind) to the home stream by using this chemical.

Why would cells die if they were unable to make (or otherwise obtain) the amino acid arginine?

Answers

Answer: Arginine is an amino acid that is incorporated into proteins. So if cells can not make or obtain arginine, the cell can not make proteins needed for survival.

Explanation:

Arginine is an amino acid used to build proteins, and it is classified as a semiessential or conditionally essential amino acid.

Proteins are large molecules consisting of long chains of amino acids. They perform many functions such as catalysing metabolic reactions, providing structure to cells and organisms, and transporting molecules, among many others.

Most notably, arginine is part of proteins that play an important role in many different processes such as cell division, immune function, wound healing and the release of hormones. Without this amino acid, the cell cannot manufacture the proteins necessary for proper functioning. So the cell dies because it cannot function properly.