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
Lyrx [107]
2 years ago
7

Ellen held a substance that is comprised of elements that have been chemically joined. The substance now has different propertie

s than the elements that were joined to make it. Ellen is most likely holding a
a. compound
b. water molecule
c. single atom
d. mixture
Biology
1 answer:
anyanavicka [17]2 years ago
8 0

Answer:

I'm going to go with a mixture sorry If this is wrong

Explanation:

You might be interested in
. What does it mean that the nitrogen gas needs to be "fixed"?
spin [16.1K]

Answer:

Nitrogen cycle

Explanation:

Nitrogen fixation is the process by which atmospheric nitrogen is converted by either a natural or an industrial means to a form of nitrogen such as ammonia. In nature, most nitrogen is harvested from the atmosphere by microorganisms to form ammonia, nitrites, and nitrates that can be used by plants.

4 0
3 years ago
How did flowers and fruits contribute to angiosperms becoming dominant land plants on earth?
Ainat [17]

Answer: The study, by Dr. Tim Brodribb and Dr. Taylor Field of the University of Tasmania and University of Tennessee, used plant physiology to reveal how flowering plants, including crops, were able to dominate land by evolving more efficient hydraulics, or 'leaf plumbing', to increase rates of photosynthesis.

Explanation: The reason for the success of this evolutionary step is that under relatively low atmospheric C02 conditions, like those existing at present, water transport efficiency and photosynthetic performance are tightly linked. Therefore adaptations that increase water transport will enhance maximum photosynthesis, exerting substantial evolutionary leverage over competing species.

The evolution of dense leaf venation in flowering plants, around 140-100 million years ago, was an event with profound significance for the continued evolution of flowering plants. This step provided a 'cretaceous productivity stimulus package' which reverberated across the biosphere and led to these plants playing the fundamental role in the biological and atmospheric functions of the earth.

4 0
2 years ago
The major function of the placenta is to
beks73 [17]

Answer:

(2) exchange food, oxygen, and waste between

mother and fetus

Explanation:

In most mammals like humans, the fetus produced as a result of the fertilization of the sperm and egg, develops in the uterus or womb of the female. However, this developing fetus cannot yet fend for what it requires for survival and is still dependent on the mother e.g nutrients, oxygen etc. How do this substances get to the fetus? Here comes the role of the PLACENTA.

Placenta is an organ in the uterus that serves as a connection between the mother and the fetus in her womb. The placenta enables the mother to pass digested nutrients to the fetus and exchange gases (oxygen and Carbondioxide) between them via the umbilical cord. The placenta also enables the mother remove waste produced by the fetus into her bloodstream.

6 0
3 years ago
Read 2 more answers
Match the following terms and definitions. 1. cross-breeding; a method that unionizes gametes of differing genes to create a new
Alexus [3.1K]
<h2>Answer </h2>
  • Hybridization
  • Recombinant DNA
  • Selective Breeding

<u>Explanation</u>

1. Cross-breeding; a method that unionizes gametes of differing genes to create a new individual is hybridization. It is the idea of combining atomic orbitals into different hybrid orbitals that is proper for the pairing of electrons to create chemical bonds in valence bond as per the atomic theory.

2. Cultured DNA molecules from different biological sources is recombinant DNA. They are the molecules are DNA molecules determining by laboratory techniques of genetic recombination to take mutually genetic material from various origins.

3. A process of breeding organisms because of their specific traits is selective breeding. It is the method that grants humans practice animal breeding and plant breeding to selectively develop selective over phenotypic traits

8 0
3 years ago
Which is the electron configuration for nobelium (No)?
MatroZZZ [7]

Thanks for submitting your question to Brainly!

Following spdf notation, the electron configuration for Nobelium (No) is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f14 6d0 7s2

8 0
3 years ago
Other questions:
  • Which statement best describes how the high specific heat of water helps maintain the temperature of Earth?
    9·1 answer
  • Does anyone know the answers?
    13·1 answer
  • Lupus, a condition in which the body attacks its own cells, is an example ofLupus, a condition in which the body attacks its own
    14·2 answers
  • Which of the following is an advantage of an in vitro experiment?
    14·2 answers
  • 5. Which of the following professionals has the authority to prescribe medication and treatment?
    15·2 answers
  • Por que o nosso nariz fica entupido quando estamos resfriados?
    5·1 answer
  • Where in the cell does the process of translation take place
    10·1 answer
  • Organisms that perform chemosynthesis can be referred to as... (Select all that apply...)
    13·2 answers
  • What is the name of the new island off Iceland that has begun succession since 1963?
    15·1 answer
  • Which factor is a major cause of the changes that
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!