I will mark brainlyest

Approximately how many different journals (technical periodicals) comprise the primary literature of biology?

inessss [21]

C.90,000 mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

7 0

3 years ago

In order to feed the growing population, scientists have found ways to increase the yield of a crop. What does the term yield me

leonid [27]

The correct answer was

Amount of food produced in an area.

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100% correct Answers

Question 1

Which kind of organism obtains energy only from producers?

herbivores

Question 2

Which of the following best describes a population?

members of the same species living in the same place at the same time

Question 3

Which of the following describes soil and temperature in an ecosystem?

abiotic factors

Question 4

A forest fire wipes out all of the plant life in an area, causing the animals to leave. The ground becomes a mixture of soil and ashes. Which order of succession is most likely to occur in the area?

grasses → shrubs → softwood trees → hardwood trees

Question 5

After a town is abandoned, the concrete parking lots remain empty and inactive for hundreds of years. What is the most likely order of ecological succession in that area?

lichens → grass → shrubs → trees

Question 6

The graphs show the trends in biodiversity of land-based life and marine-based life. Choose the answer that best fits the graph.

the sustainability of ecosystems is decreasing regardless of protected areas.

Question 7

Read the passage "Easter Island Palm." Choose the answer below that best fits the problem on Easter Island.

EASTER ISLAND PALM

In the 1400s, the Easter Island palm became extinct due to overharvesting. Reproduction was nearly impossible because islanders introduced rats when they first arrived. These rats ate the Easter Island palm seeds, preventing the Easter Island palm from flourishing. With the disappearance of the palm, the islanders could no longer build the boats they needed for fishing.

a decrease in the temperature, leading to decreased biodiversity

Question 8

The primary reason that the human population has grown rapidly over the past 100 years is that there has been

an increase in food supplies and better access to clean water.

Question 9

Which of the following would cause a decrease in a population's size?

emigration

Question 10

Decisions made by the current generation

can open or limit possibilities of future generations.

Question 11

In order to feed the growing population, scientists have found ways to increase the yield of a crop. What does the term yield mean?

Amount of food produced in an area.

Question 12

Which factor can cause secondary succession?

clear cutting

Question 13

What is the role of a pioneer species in primary succession?

to create the soil

Question 14

The number of rhinoceroses has decreased to near extinction. How are rhinoceroses classified under the Endangered Species Act?

endangered

Question 15

Lions live in groups called prides. Lion populations would most likely fall in which category of population distribution?

clumped

4 0

4 years ago

What’s bigger a lion or a tiger

REY [17]

Lions are usually bigger.

7 0

4 years ago

A food change is an ecosystem flows from green algae, to freshwater snails, to small fish, and finally to large fish. Which orga

romanna [79]

Answer:

The correct answer is - freshwater snails.

Explanation:

Producers are organisms that produce their own food and not depends on any other organism by the process of photosynthesis such as algae. Primary organisms on the other hand directly depend on the producers for their food and often gt killed by secondary consumers.

Freshwater snails are the perfect example of the primary consumer as they get their food and energy from algae and are the primary source of food and energy for small fishes.

7 0

3 years ago

Correctly order the steps in which blood travels through the heart from the time it enters from the systemic circuit until it re

Sav [38]

Answer:

Steps in which blood travels through the heart from the time it enters from the systemic circuit until it returns to the systemic circuit are:

Aorta receives the oxygenated blood from the left ventricle.And gives it to systemic arteries.
Cells recieve the oxygenated blood and give out carbon dioxide laden blood.
The superior and inferior venacava bring deoxygenated blood to the right atrium.
The deoxygenated blood then moves into the right ventricle.
Deoxygenated blood reaches lungs through Pulmonary artery.
Left Atrium recieves blood from lungs through pulmonary veins..
Oxygenated then moves into Left Ventricle.
Aorta recieves the blood from the Left ventricle

Explanation:

There are Two types of circulation in human body; the pulmonary circulation and the systemic circulation.

In Pulmonary circuit the blood is pumped into the lungs from the right ventricle to the lungs through pulmonary arteries. In this circulation the blood gets oxygenated.

In Systemic circuit the oxygenated blood from the lungs is pumped into aorta by the Left ventricle so that it can reach the body tissues,

This circuit also brings deoxygenated blood from the body to the Right atrium of the heart.

Blood enters the systemic circuit when Aorta receives the oxygenated blood from the left ventricle.

The oxygenated blood then flows into the systemic Arteries and reaches the body tissues.

Cell consumes the the required oxygen and nutrients then adds carbon dioxide, hormones and waste material to the blood.

The systemic veins collect the deoxygenated blood.
The deoxygenetated blood from upper half of the body is carried by superior vena cava and the blood from lower half of the body is carried by inferior vena cava.
Both superior and inferior vena cava bring the blood to the right Atrium.
From the right atrium, the blood moves into right ventricle through tricuspid valve.
The Pulmonary artery carries the blood from right ventricle to the lungs.
After the carbon dioxide diffuses out and oxygen is added, the blood is taken up by pulmonary vein.
The Pulmonary vein brings the oxygenated blood to the left atrium of the heart.
The blood then moves into the left ventricle through the bicuspid valve.
The left ventricle then pumps the blood into the Aorta through aortic valve returning the circulating blood to the systemic circuit

5 0

4 years ago