1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ludmilka [50]
2 years ago
5

Multiple Choice Questions.

Biology
1 answer:
Tpy6a [65]2 years ago
4 0
Petiole, hopefully this helps you
You might be interested in
Stars change over millions of years.<br>O True<br>O False​
SCORPION-xisa [38]

Answer:

true

Explanation:

stars can change bc Stars change over time. ... It is in the clouds of dust and gas that stars are born. As more and more of the gas (which is mostly hydrogen) is pulled together by gravity into a cloud, the cloud starts to spin. The gas atoms start to bump into each other faster and faster.

8 0
2 years ago
The type of epithelium that lines the urinary bladder and may include some binucleated cells is called ____________ epithelium.
Leno4ka [110]
Transitional epithelium
4 0
2 years ago
What percentage of new hiv infections among adults occurs in sub-saharan africa?
Lina20 [59]
66% of new HIV infections occur in sub-saharan Africa.
5 0
3 years ago
Which theory is currently accepted as explaining the Moon's creation?
aliya0001 [1]

Explanation:

The giant-impact hypothesis is currently the favored scientific hypothesis for the formation of the Moon. Supporting evidence includes: Earth's spin and the Moon's orbit have similar orientations. Moon samples indicate that the Moon's surface was once molten.

5 0
2 years ago
You are a molecule of phosphorus. Choose a starting point in the process you would go through to move through the entire cycle.
noname [10]

Answer:

First I'd be found in rocks. Erosion would wash me into the soil. Then I'd be absorbed by plants, fungi or microorganisms so they can grow. Animals would get me by eating the plants or drinking the water that eroded the rock. The plants and animals die and I'm absorbed back into the soil.

Explanation:

Phosphorus Cycle Steps

The phosphorus cycle is a slow process, which involves five key steps.

Weathering

Since the main source of phosphorus is found in rocks, the first step of the phosphorus cycle involves the extraction of phosphorus from the rocks by weathering. Weather events, such as rain and other sources of erosion, result in phosphorus being washed into the soil.

Absorption by Plants and Animals

Once in the soil, plants, fungi, and microorganisms are able to absorb phosphorus and grow. In addition, phosphorus can also be washed into the local water systems. Plants can also directly absorb phosphorus from the water and grow. In addition to plants, animals also obtain phosphorus from drinking water and eating plants.

Return to the Environment via Decomposition

When plants and animals die, decomposition results in the return of phosphorus back to the environment via the water or soil.  

Plants and animals in these environments can then use this phosphorus, and step 2 of the cycle is repeated.

Human Impact on the Phosphorus Cycle

Humans have had a significant impact on the phosphorus cycle due to a variety of human activities, such as the use of fertilizer, the distribution of food products, and artificial eutrophication. Fertilizers containing phosphorus add to the phosphorus levels in the soil and are particularly detrimental when such products are washed into local aquatic ecosystems. When phosphorus is added to waters at a rate typically achieved by natural processes, it is referred to as natural eutrophication. A natural supply of phosphorus over time provides nutrients to the water and serves to increase the productivity of that particular ecosystem. However, when foods are shipped from farms to cities, the substantial levels of Phosphorus that is drained into the water systems is called artificial or anthropogenic eutrophication. When levels of phosphorus are too high, the overabundance of plant nutrients serves to drive the excessive growth of algae. However, these algae die or form algae blooms, which are toxic to the plants and animals in the ecosystem. Thus, human activities serve to harm aquatic ecosystems, whenever excess amounts of phosphorus are leached into the water.

8 0
2 years ago
Other questions:
  • True or false: articulations are places on skeleton where bones have ridges.
    9·1 answer
  • Which substance is broken down during glycolysis?
    10·2 answers
  • :) How does reducing heart rate during a dive enable animals to stay underwater longer?
    10·1 answer
  • Which organisms can be treated with penicillin g (benzylpenicillin)? (select all that apply.)?
    14·1 answer
  • Susan wants to see how different chemicals in the soil affect plant growth. Therefore, she gets all of the same type of plant, s
    13·2 answers
  • The characteristic of the human immunodeficiency virus (HIV) that makes it different from other RNA viruses is that it _________
    13·1 answer
  • Do all cells have a cell plate?
    10·1 answer
  • 2. Which is the best definition of reader's theater?
    9·1 answer
  • The microbes that usually live on or in a person are collectively referred to as:_____.
    5·1 answer
  • Glycolysis requires ______ atps to work, but makes ______ atps. this results in a net of _________ atps.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!