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
Lady bird [3.3K]
3 years ago
15

Mrs. Lewis set up a lab for her biology students using a culture of the small crustacean Daphnia, obtained from a pond that was

20°C. The students are to investigate the effect temperature has on Daphnia. The students will observe the crustacean’s heartbeat under the microscope, at different temperatures, and count the number of heartbeats per sec. What is the independent variable in this experiment?
5 points
Biology
1 answer:
Drupady [299]3 years ago
5 0

Answer:

Hiii, the answer is b, hope this helped! :)

Explanation:

You might be interested in
Street signs around the city of Austin, Texas warn citizens against
marusya05 [52]

Answer:

3. liquid waste me directly into the ground water

Explanation:

Aquifer is a layer of water which is present inside the soil at a certain depth. There are certain areas where water is added to the aquifer and maintain the water level. These aquifers were polluted if liquid waste is dumped in these aquifer recharge areas and when this water is extracted through wells so health of both plants and animals are adversely affected. So for that reason liquid waste should not be dumped in recharge areas of aquifer.

7 0
3 years ago
Bratz babyz fish tank how long does it take for eggs to hatch
aliina [53]
Fish eggs only take a few days to hatch
5 0
3 years ago
You are awaiting the white blood cell differential results for a patient who presented with a ruptured appendix and peritonitis.
vovangra [49]

Answer:

Neutrophils

Explanation:

In this case of a ruptured appendix and peritontis, the neutrophils are more likely to be elevated above normal value because:

1. They are the most abundant white blood cells (WBCs), about 60%-70% of the total white blood cell count.

2. they help to defend the body against fungal and bacterial infections and heal tissues that are damaged. The most likely infection to occur from a ruptured appendix is a bacterial infection.

Other WBCs like eosinophil is involved in parasitic infection; basophil is involved in allergic reaction; while monocyte is involved in phagocytosis.

3 0
3 years ago
Your _____ indicates that the relative humidity is very high. Rain probably _____ occur. anemometer; will anemometer; won't hygr
Kruka [31]
The answer is <span>hygrometer, will.

</span><span>Your <u>hygrometer</u> indicates that the relative humidity is very high. Rain probably <u>will</u> occur. 
Hygrometer is an instrument used for measuring the relative humidity in the atmosphere. If the relative humidity is very high, then it rain will probably occur and vice versa.
Anemometer is an instrument used for measuring wind speed, thus it cannot be the right answer.</span>
4 0
3 years ago
Read 2 more answers
What is the function of the endoplasmic reticulum?
krok68 [10]
It transports items in and out of the cell
8 0
3 years ago
Read 2 more answers
Other questions:
  • In which phase of meiosis 1 do homologues separate?
    6·1 answer
  • list two factors that affect how important a particular greenhouse gas is in contributing to the greenhouse effect
    15·2 answers
  • Terbutaline belongs to which drug classification antineoplastic
    12·1 answer
  • If a child were born with a mutation that made the ascending limb of the loop of henle permeable to water, what would be the min
    11·1 answer
  • What term is defined as "the basic unit of structure and functon found in all living thing
    12·1 answer
  • Why do biologists believe glycolysis evolved before the krebs cycle and the electron transport chain?
    11·1 answer
  • What happens in sexual reproduction?
    12·2 answers
  • HELP PLEASE<br><br> Give 2 cause and effect examples for Native Species.
    11·1 answer
  • Higher energy contained in the sugar molecules produced by photosynthesis comes from
    12·2 answers
  • I need help <br>I would give brainliest ​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!