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
hodyreva [135]
3 years ago
7

How many mammal species exist today?

Biology
1 answer:
bogdanovich [222]3 years ago
4 0
There are over four thousand different species of mammals that exist today. The largest being the blue whale and the smallest being the hog-nosed bat.
You might be interested in
What are the two part of the nerves system?<br><br> name the three part of the nervous system?
Genrish500 [490]
Use Google good source
5 0
3 years ago
Question 2 of 9
Jlenok [28]

Answer:

The correct answer is option D.  Light and some other factors are necessary for chlorophyll production

Explanation:

By this experiment, it is clear that light is the major factor that helps in the production of chlorophyll in seedlings or plants. In this study, placing the seeds in the light turns 75 seedlings green which is possible by the production of the green pigment, chlorophyll only. So, it is proved that light is a key factor in the production of chlorophyll.

Besides light, there must be some other factors (mineral nutrition and chemical metabolites) that also play role in the production of chlorophyll or increase or decrease of the chlorophyll production as few seedlings did not turn green in the study.

8 0
3 years ago
What is the purpose of crop rotation?
Rama09 [41]

Answer:

C) To improve soil fertility and structure

Explanation:

Crop rotation, the practice of planting different crops on the same land, improves soil health and boosts nutrients within the soil.

4 0
3 years ago
What group of carbohydrates does glucose belong to ??
Kamila [148]
<span>it belongs to the Monosaccharides group

</span>
3 0
3 years ago
Read 2 more answers
What evidence suggests that vertebrates are more closely related to echinoderms than are any other invertebrate phyla?
VMariaS [17]

Answer:

Option C, shared DNA sequences

Explanation:

Complete question -

What evidence suggests that vertebrates are more closely related to echinoderms than are any other invertebrate phyla?  

- shared patterns of development

- shared morphology

- shared DNA sequences

Solution

Vertebrates have true backbone while invertebrates lack true backbone. Among the invertebrates, the echinoderm phylum is closely related to vertebrates as the echinoderm possesses notochord (similar to backbone) during their early stage development which disappears later.  

Through the genomic sequence studies it has been found that echinoderms are similar to vertebrates in many ways. Echinoderms have diverged from deuterostomes along with human and hence pose some genetic similarity  which can be devised through study of common DNA sequences

Hence, option C is correct

5 0
3 years ago
Other questions:
  • What has prokaryotic cells?<br> Onion root<br> Cows liver or<br> Human blood
    5·2 answers
  • Which organisms are extremely small and use hosts as both home and food supply
    12·2 answers
  • A plant absorbs energy from the Sun. Where does the energy go from there? All of the energy is transferred to primary consumers.
    8·2 answers
  • Can more than one dichotomous key be developed to identify the same group of organisms? Explain. To answer this question, refer
    9·1 answer
  • Which of the following is true about cells
    5·2 answers
  • Explain why plants try to spread their pollen and their seeds?
    13·1 answer
  • Explain why sponges and cnidarians were the first animals to evolve
    15·2 answers
  • What are Carotenoids?
    7·2 answers
  • ¿Cuáles son los derechos que defiende el Fondo De Las Naciones Unidas Para La Infancia?
    8·1 answer
  • To identify the molecule that accepts CO₂ , Calvin and Benson manipulated the carbonfixation cycle by either cutting off CO₂ or
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!