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
scoundrel [369]
3 years ago
9

There is a large amount of biodiversity throughout the world. According to the theory of natural selection, which of the followi

ng factors is primarily responsible for biodiversity?
Biology
2 answers:
Svetllana [295]3 years ago
6 0
Environmental diversity
pishuonlain [190]3 years ago
6 0
Environmental diversity
You might be interested in
Is Brown Algae A Eukaryotic Cell or a Prokaryotic Cell
kumpel [21]
Brown algae is eukaryotic cell
6 0
3 years ago
How does flouride cause kidney deasies
SCORPION-xisa [38]

Answer:

Hepato- and nephrotoxicity of fluoride have been demonstrated in animals, but few studies have examined potential effects in humans. This population-based study examines the relationship between chronic low-level fluoride exposure and kidney and liver function among United States (U.S.) adolescents. This study aimed to evaluate whether greater fluoride exposure is associated with altered kidney and liver parameters among U.S. youth.

This cross-sectional study utilized data from the National Health and Nutrition Examination Survey (2013–2016). We analyzed data from 1983 and 1742 adolescents who had plasma and water fluoride measures respectively and did not have kidney disease. Fluoride was measured in plasma and household tap water. Kidney parameters included estimated glomerular filtration rate (calculated by the original Schwartz formula), serum uric acid, and the urinary albumin to creatinine ratio. Liver parameters were assessed in serum and included alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, blood urea nitrogen, gamma-glutamyl transferase, and albumin. Survey-weighted linear regression examined relationships between fluoride exposure and kidney and liver parameters after covariate adjustment. A Holm-Bonferroni correction accounted for multiple comparisons.

The average age of adolescents was 15.4 years. Median water and plasma fluoride concentrations were 0.48 mg/L and 0.33 μmol/L respectively. A 1 μmol/L increase in plasma fluoride was associated with a 10.36 mL/min/1.73 m2 lower estimated glomerular filtration rate (95% CI: −17.50, −3.22; p = 0.05), a 0.29 mg/dL higher serum uric acid concentration (95% CI: 0.09, 0.50; p = 0.05), and a 1.29 mg/dL lower blood urea nitrogen concentration (95%CI: −1.87, −0.70; p < 0.001). A 1 mg/L increase in water fluoride was associated with a 0.93 mg/dL lower blood urea nitrogen concentration (95% CI: −1.44, −0.42; p = 0.007).

Fluoride exposure may contribute to complex changes in kidney and liver related parameters among U.S. adolescents. As the study is cross-sectional, reverse causality cannot be ruled out; therefore, altered kidney and/or liver function may impact bodily fluoride absorption and metabolic processes.

hope this helps

rate brainiest

6 0
2 years ago
The graph shows the carrying capacities for two populations of salmon in two different areas.
Karo-lina-s [1.5K]

Answer:

B

I hope it helps.

6 0
3 years ago
Neurons conduct and receive information from other neurons in the form of electrical currents. the receiving end of the neuron i
777dan777 [17]
Dendrite; axon; synapse

These are parts of the neuron which is considered as the basic unit of nervous system. The cell responsible for receiving sensory input from the external environment. The stimulus will be transported in an electrical signal via neuronal parts. Axon transmit signal to the other neuron. Dendrites are the receiving part of the neuron. Synapse is the space between each neuron where elctrical impulse is converted into a chemical signal via neurotransmitters.

8 0
3 years ago
Which statement is true about prokaryotic cells?
Mashutka [201]

Answer:

It’s A

Explanation:

Itw a because it does contain a nucleus

3 0
3 years ago
Other questions:
  • What field of work has been most impacted as dna technology has improved?
    12·1 answer
  • What types of plant cells have chloroplasts?
    12·2 answers
  • Which of the following statements is true of offspring from organisms that reproduce asexually?
    9·2 answers
  • Which organisms have five "fingers"?
    14·2 answers
  • Hipótesis what effect t s does the water temperature have on solution rate
    15·1 answer
  • DNA is considered the hereditary material . Why?
    12·1 answer
  • In nature, selective pressures on populations are varied and interrelated. Select the primary type of selection best describing
    5·1 answer
  • How many molecules of carbon dioxide are required to produce a 6-carbon sugar?
    10·1 answer
  • What are some applications of PCR?
    6·1 answer
  • The most common causes of prehepatic jaundice are ________ and ineffective erythropoiesis.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!