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belka [17]
2 years ago
10

1. What is a control and how does a scientist use it in a controlled experiment? control

Biology
1 answer:
Nata [24]2 years ago
8 0

A control is a experimental variable that is kept constant or unchanged during an experiment. During a controlled experiment, the controlled variables are held constant to minimize or stabilize their effects on the subject, its unchanging state allows the relationship between the other variables being tested to be better understood.

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A population's carrying capacity A. may change as environmental conditions change. B. can be accurately calculated using the log
snow_tiger [21]

A population's carrying capacity may change as environmental conditions change.

<h3>What is environmental conditions?</h3>

Angles are often specified clockwise from true north to indicate the direction "from whence" the element is coming.

Tidal changes won't significantly affect the loads on deepwater risers and might not even be considered while designing them.

Omnidirectional winter storm criteria for 10- and 1-year return periods, as well as omnidirectional hurricane criteria for the 10-year significant wave height and associated factors

  • the condensed wave scatter plot of all waves (operational, winter storm, and hurricane);
  • The 10- and 1-year loop/eddy current profiles, along with the corresponding wind and wave parameters; Loop/eddy normalized profiles;
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To learn more about environmental conditions from the given link:

brainly.com/question/27022173

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7 0
1 year ago
Elizabeth is 90 years of age. compared to when she was 30 years of age, her _____ now. cells require more energy arteries are le
Sav [38]

The answer is ‘arteries are less flexible’. This is why the older you get the more predisposed you are to cardiovascular diseases such as high blood pressure. However, regular exercise may delay this development. The barometers in the blood vessels also become less sensitive hence these vessels become less responsive to blood pressure changes.






7 0
3 years ago
Which statements correctly describe the inheritance pattern for the alleles that control blood type?
elena-s [515]

Answer:

Statements 1,2 and 6 are correct statements. Explanation: Blood group is determined by three alleles IA, IB and i. IA and IB are dominant alleles and show phenotype blood group A and blood group B respectively when they're combined with allele i.

Explanation:

pls mark me as brainleast and folow me

8 0
3 years ago
Someone plz help me
erik [133]

Answer:

A

Explanation:

7 0
2 years ago
Read 2 more answers
Explain how the various specialiesed cells are modified to Cary out to their function 20mark​
Pani-rosa [81]
Sperm cell; has acrosome containing lytic enzymes; that digest the egg membranes for penetration during fertilization; has a long tail; containing numerous mitochondria; to generate maximum energy for propulsion/swimming in the vaginal fluid after ejaculation; Red blood cells; are flattened, circular/spherical biconcave in shape; to increase the surface area for packaging of haemoglobin; has haemoglobin; that combines with respiratory gases; for transport to and from body tissues; White blood cells; are amoeboid in shape hence able to change shape; to engulf pathogens through phagocytosis; lymphocytes produce antibodies to fight pathogens; Nerve cell; has extensions/dentrites; to receive and send information for sensation; Ciliated epithelial cells; have cilia for propulsion of mucus that traps dust and micro-organisms in the respiratory tract; Muscle cells; elongated, striated and contractile; to bring about movement; Plant cells: Guard cells; bean-shaped; to regulate the size of the stomata allowing gaseous exchange; and control water loss; has chloroplasts with chlorophyll; for photosynthesis; Root hair cell; elongated; thin-walled; with dense cytoplasm for absorption of water and mineral salts; Epidermal cell; thin; for protection of inner tissues from mechanical and micro-organism attack; Palisade cell; contains numerous chloroplasts with chlorophyll; for photosynthesis; elongated; to increase surface area for trapping maximum amounts of light energy; Meristematic cell; thinwalled; with dense cytoplasm; for primary and secondary growth
8 0
3 years ago
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