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
Tcecarenko [31]
3 years ago
9

During a biology lab practical, students were required to identify a metal by its density. All the metals were painted green so

students could not use color as a factor to eliminate choices. Carl computed the density of his sample metal to be 8.9 g/cm3. Since Carl's lab grade depended on his accuracy and correct identification of the sample metal, he was unsure which sample he had, nickel or copper. What would you tell Carl about his density measurement? A) Disregard any decimal points and use only whole numbers. B) 8.9 is closer to to 8.91 than 8.96 so Carl should chose nickel. C) Re-do the measurements, several times, and take the average density before making a decision. D) When using water displacement to find the volume, be sure to read the meniscus to the nearest 0.01 ml.
Biology
2 answers:
den301095 [7]3 years ago
8 0

Answer:

C) Re-do the measurements, several times, and take the average density before making a decision.

Explanation:

For the correct identification of the metal, weather its nickel or copper, Carl should repeat the experiment several times and take the average density before making the decision. It is important because it reduces the chance of error and ensure the data integrity.  The more the sample size is, lessen would be the error.  

Artemon [7]3 years ago
7 0

Answer:

Re-do the measurements, several times, and take the average density before making a decision.

Explanation:

Do not rely on just one set of measurements if your grade depends on accuracy. Take several sets of measurements; next take an average. Do not round while measuring or before computing; round last.

You might be interested in
Define disruptive selection
ivolga24 [154]

Disruptive selection describes changes in population genetics in which extreme values for a trait are favored over intermediate values.

8 0
3 years ago
Read 2 more answers
Which is the dark reaction called a cycle
enot [183]

Thank for the points.

5 0
3 years ago
Read 2 more answers
A plant with the genotype TT is called _____.<br><br> homozygous<br> heterozygous<br> hybrid
Vinvika [58]
The genotype Is Homozygous
5 0
3 years ago
Read 2 more answers
Complete the sentences by matching the names of trees to the appropriate blanks. Terms may be used more than once. 1. Conifer le
Butoxors [25]

Answer:

Evergreens are plants that maintain their leaves in all seasons and include trees such as pine, cedar, and mango. 2. Deciduous trees lose their leaves seasonally and include trees such as elm and maple. 3. Hardwoods reproduce using flowers and have broad leaves: hardwoods include trees such as maple, elm, and mango. 4. Conifer leaves are generally thin and needle-like, while seeds are contained in cones. Conifers include pine and cedar.

Explanation:

  • Evergreens plants: These plants keep the foliage the year. They change leaves during their whole life, but the frequency in which they change them is not the same as the deciduous plants, and this event does not coincide with any season in particular. They do not need to lose leaves during unfavorable seasons. These species develop different strategies and adaptations to go through unfavorable weather conditions. They have special leaves to avoid water loss or freezing, some of them are thin and needle-like shaped, or might be covered with wax or fuzz. Example: Pine, cedar.
  • Deciduous plants: During autumn and winter, deciduous trees from temperate forests need to store different nutrients that will be used for the plant growth during the following spring.  Storaging nutrients in leaves require too much energy and constant photosynthetic activity, which might be very difficult for the plant to support during these colder seasons. To confront this situation, these species have developed some strategies such as leaves senescence. The tree stops supplying water and nutrients to the leaves, so these last ones stop producing chlorophyll. When this molecule is completely lost, other pigments that were masked by chlorophyll, show up.  Before senescence occurs, pigments such as carotenoid, anthocyanin, or pheophytin reveal yellow, orange, red, purple, and brown tones, which are the characteristic autumn colors. Example: maple and elm
  • Angiosperm characterize for their reproductive strategy, producing flowers and fruits, and dispersing by their seeds. These last ones are located in an ovary (in the fruit). These species attract pollinizers through the flower characteristics and reward and attract animals with their fruits, guaranteeing seeds dispersion. Example: maple and mango
  • Gymnosperm does not develop flowers nor fruits. They have naked seeds on the surface of scams or leaves. Seeds frequently develop in pine cones, which are specialized branches. Example: Pine, cedar
  • Conifer belongs to the Gymnosperm.
5 0
3 years ago
What is the effect of increasing the rate of photosynthesis on biospheric carbon
natulia [17]

Answer:

carbon dioxide at normal atmospheric concentrations is limiting for the metabo- lism and growth of most land plants of the world. These plants share a comparable photosynthetic metabolic pathway, termed C3 photosynthesis. With an increase in CO2 there is an increase in photosynthesis and growth.

Explanation:

3 0
3 years ago
Other questions:
  • Where does a nurse expect to hear bronchovesicular lung sounds in a healthy adult?
    10·1 answer
  • Jennifer’s children have always been short when compared to their classmates. One day her son blurted out, "I can’t wait until I
    5·1 answer
  • 96410 mg = ____kg<br> Help me
    15·1 answer
  • Extinction of organisms is a relatively recent phenomenon attributed primarily to man.
    5·2 answers
  • Some proteins, like Response area, have the function of Response area. Nucleic Acids, like Response area, are responsible for Re
    5·1 answer
  • I WILL GIVE BRAINLIEST!!!
    8·2 answers
  • do you guys know what to do? because i definitely don’t. i’m stumped so 20 points if you guys can help me out.
    11·1 answer
  • Why could fat cells be larger than liver cells?
    11·1 answer
  • When do monarch butterflies spend their time in the Oyamal forests of Mexico?​
    15·2 answers
  • What is the activities of life that occur the cellular level​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!