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artcher [175]
2 years ago
8

What is the first mammal to walk on earth?

Biology
1 answer:
Soloha48 [4]2 years ago
8 0
When God created earth he said he's going to maka men to take care of earth.

search it on the bible if not sure.
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A minimum change in sensory intensity that is noticeable to an observer and can be coded into neural messages is known as the
AURORKA [14]
Difference threshold is a minimum alteration in sensory intensity that is noticeable to an observer and can be coded into neural messages. Different threshold is the lowest level of encouragement that is essential to sense that a modification has happened the difference in the intensity between two stimuli that is necessary to yield a just notable difference also known as JND. The just notable difference depends not only on the intensity of the new stimulus but also on the level of stimulation already present which is the more intense the existing stimulus the larger the change must be to be noticeable. 
6 0
3 years ago
Some scientists reproduce, or grow, cells in a laboratory setting so they can study the cells for particular reasons. Research d
Shalnov [3]

<u>Cell culture i</u>s the method applied by scientists to grown, cells in the laboratory setting to study the cells for particular reasons.

Explanation:

Cell culture is basically a method for survival, reproduction etc which are done under controlled conditions in the space outside the environment. This is also used for data mining.

Purpose: Cell culture is used for propagation of virus

Advantages:

  • Vaccine production by replication of virus
  • Detection of viral cell of virus
  • Convenient easy and economical method

Disadvantages

  • Maintenance of sterile aseptic conditions.  
  • Increases microbial contamination
  • Cross contamination takes place
4 0
3 years ago
From your genetics lab, what gram-positive bacterium was used during your experiment on genetic manipulation of a corn plant? lu
IRINA_888 [86]

From your genetics lab, Agrobacterium tumefaciens gram-positive bacterium was used during your experiment on genetic manipulation of a corn plant

Rhizobiaceae is a family of bacteria that includes Agrobacterium tumefaciens. Gram-negative and aerobically growing, these bacteria don't produce endospores. The cells have one to six peritrichous flagella and are rod-shaped and motile. Cells can exist alone or in pairs and range in size from 0.6 to 1.0 m by 1.5 to 3.0 m.

Agrobacterium tumefaciens is a gram-negative bacterium that causes tumors in plants through horizontal gene transfer. In a variety of plant species, Agrobacterium tumefaciens has been widely exploited as the primary agent in the generation of transgenic plants. A soil phytopathogen called Agrobacterium tumefaciens naturally infects plant wound sites and causes the disease known as crown gall by the transfer of (T)-DNA.

To learn more about agrobacterium tumefacient please visit
brainly.com/question/7231132
#SPJ4

6 0
1 year ago
Which of the following could be classified as predation? a barnacle attached to a whale without causing harm to the whale a tape
grandymaker [24]
It would be D) A Shark Eating a Tuna
Predation - The Preying of one Animal on others
6 0
3 years ago
Which of the following statements is FALSE?
Naya [18.7K]

Answer: d. None of the above is false.

Explanation: The reasons are:

Intermolecular forces should be reduced when molecules need to be vaporized, otherwise they will not be converted into vapours.

When the temperature increases, forces of attraction decreases which allows molecules to evaporate because energy will be increased which allows molecule to break bonding between them. Hence increasing temperature has effect on vaporization.

Dispersion forces is the weakest force between molecules and hydrogen bond is strong so molecule having only dispersion force will evaporate at the higher rate.

8 0
2 years ago
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