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
Lapatulllka [165]
4 years ago
13

which group of animals has existed the longest? a. tubulidentates b. perissodactyls c. artiodactyls d. sirenians

Biology
1 answer:
AleksAgata [21]4 years ago
7 0
The correct answer is C. Artiodactyls

They've been around more than the others and have existed for some 55 million years.
You might be interested in
Which is the BEST explanation for the drastic decrease in the number of dolphins killed after 1975?
Sholpan [36]

Answer: Which is the BEST explanation for the drastic decrease in the number of dolphins killed after 1975?

A Tuna fishing was banned in 1975.

B. Dolphins stopped swimming with tuna.

C. Economic and political pressures were brought against tuna fishermen.

D. Dolphin deaths and tuna catches were not considered important after 1975.

Explanation: Improvements in fishing gear and techniques discussed in Chapter 7, the mandatory observer program, and the kill quota were responsible for the dramatic decline in the number of dolphins killed by boats in the U.S. fleet.

3 0
2 years ago
The stage of meiosis in which chromosomes pair and cross over is:
topjm [15]
The answer here is Prophase 1 (A)

In the event of meiosis, Prophase 1 occurs right after Interphase (stage when DNA is replicated). In the Prophase 1 stage, chromosomes condense and pair off and then exchange DNA between each other in a manner of crossing-over homologous chromosomes.  The cross-over procedure forms a X-like region called Chiasmata that holds the homologous chromosomes intact.
4 0
3 years ago
Can you identify characteristics of type 1 and type 2 diabetes?To learn about diabetes, watch this BioFlix animation: Homeostasi
Snowcat [4.5K]

Answer:

Type 2 diabetes  - target cell do not respond normally to insulin

Type 1 diabetes - no insulin is produced

Both type 2 and type 1 diabetes - Glucose level remains higher than normal

Explanation:

complete question

statements are

1. target cell do not respond normally to insulin

2. no insulin is produced

3. Glucose level remains higher than normal

Solution

Type 1 and 2 diabetes is different in the following ways  

1. Type 1 diabetes is a type of auto immune disease  in which the causative agent of disease attacks on the cells responsible for defending that disease. Hence, in case of diabetes 1, pancreas is restricted from producing insulin. While in case of diabetes 2, there is enough insulin but body gets resistant to it.  

2. Type 1 diabetes usually occur in children and Type 2 diabetes occur after the age of 40 or in adulthood.

3. Sugar level is high in case of both the diabetets types. In type 1 sugar build because no insulin is produced and in type 2 sugar increases because of bodies getting resistant to insulin.

Hence, the correct match is

Type 2 diabetes  - target cell do not respond normally to insulin

Type 1 diabetes - no insulin is produced

Both type 2 and type 1 diabetes - Glucose level remains higher than normal

7 0
3 years ago
This picture shows the United States Arctic National wildlife refuge, a large portion of Alaska that is protected from human act
finlep [7]

Answer:C) every ecosystem in the area

Explanation:

i took the test

trust me

4 0
4 years ago
Read 2 more answers
Alec saw footage of a landslide on the news. He saw rocks falling from the side of a mountain, with some of them smashing into e
ruslelena [56]
Weathering and erosion
6 0
3 years ago
Read 2 more answers
Other questions:
  • Can plants that normally live in the desert to exhibit more pronounced phototropism than forest dwelling plants?
    15·1 answer
  • An independent variable is
    7·1 answer
  • Which two animals are able to generate internal heat to maintain their body temperature in a cold environment? parrot snake frog
    11·2 answers
  • Governments trying to halt overharvesting of their aquatic organisms have often created __________.
    6·1 answer
  • Marine debris is best described as being composed of
    15·2 answers
  • How the does the shape of an enzyme affect the reaction?
    10·1 answer
  • What percent of energy is transferred between the levels indicated by the blue arrows? (3 points)
    6·2 answers
  • What is natural selection and what are ifs effects on allele frequencies
    8·1 answer
  • Discuss the arguments for and against genetic therapy and genetic engineering.
    8·1 answer
  • after a power stroke, the myosin head must detach from acting before another powerstroke can occur. what causes
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!