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katovenus [111]
3 years ago
15

The process by which oxygen and carbon dioxide are exchanged between cells blood and air is called

Biology
1 answer:
Free_Kalibri [48]3 years ago
4 0
The answer is called respiration. Hope this helps.
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What is the relationship between undisturbed sedimentary rock layers and fossils?
Juli2301 [7.4K]

Answer:

Older fossils are found in deeper layers of sedimentary rock.

Explanation:

The relationship between undisturbed sedimentary rock layers and fossils is that older fossils are found in deeper layers of sedimentary rocks.

This is one of the premise of the law of superposition and principle of fossil and fauna succession.

  • An undisturbed sequence is one in which the sedimentary layers have been arranged sequentially.
  • The oldest is at the bottom and the youngest on top.
  • Also, fossils grade in this manner too.
  • The oldest fossils will be in the oldest bed which is the deepest layer.
  • The youngest bed will contain the youngest fossils in like manner too.
7 0
3 years ago
Form a Hypothesis: As the map shows, the sickle cell allele is not found in African populations that are native to southern Afri
kati45 [8]

A hypothesis for this observation might be that malaria is not endemic to southern Africa. It is a plausible explanation of a given scientific question.

<h3>Hypothesis and scientific method</h3>

A hypothesis is a plausible explanation of an observation of the natural world, which must be tested by using the scientific method.

Testing a hypothesis involves performing additional observational and/or experimental procedures in order to confirm or reject this assumption.

In this case, the sickle cell allele is found in high frequency in regions where malaria is endemic.

Learn more about hypotheses here:

brainly.com/question/11555274

6 0
2 years ago
A young man presents reporting diarrhea, fecal urgency, and weight loss. his stool is light-coloured and malodorous, and it tend
LUCKY_DIMON [66]
Based on the salient features and the laboratories of this patient, this is a case of Crohn's disease. Crohn's disease is type of chronic inflammatory bowel disease or IBD along with ulcerative colitis. Crohn's disease usually presents with diarrhea, abdominal pain, and significant weight loss. Pathologically, it is characterized by "skip-lesions" or discontinuous granulomatous that occurs on all layers of the bowel (transmural); with the involvement of the whole gastrointestinal tract. Patients with Crohn's disease have a significant risk in developing colorectal cancer.
6 0
3 years ago
What do scientists use to divide the geologic time scale? Major divisions in the fossil records Major divisions in the sedimenta
IgorC [24]
The correct option is B: MAJOR DIVISIONS IN THE SEDIMENTARY ROCK LAYERS.
Geologic time scale refers to a system of chronological dating which relates geological strata to time. Geologic time scale is used by scientists to describe the timing of the events that had occurred in the past, thus the scale divides the earth history into units of varying magnitude. There are four basic block of time, these are eons, eras, periods and epochs.
In determine geological time, rock records provide evidence of past geological events and life forms.
3 0
3 years ago
Community constituencies of a local health department (lhd) include
Kaylis [27]

the land mass in the geographic

region served by the LHD.

5 0
3 years ago
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