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
Rom4ik [11]
3 years ago
6

What types of plants are the first to arrive

Biology
1 answer:
lozanna [386]3 years ago
6 0

The first land plants appeared around 470 million years ago, during the Ordovician period, when life was diversifying rapidly. They were non-vascular plants, like mosses and liverworts, that didn't have deep roots

You might be interested in
The function of a catalyst in a chemical reaction is to increase the
PtichkaEL [24]

r<u>ate of a chemical reaction without itself undergoing any permanent chemical change.</u> That would be your answer. I hope that this helped! Please leave brainliest!

5 0
3 years ago
A fruit fly of genotype B R/b r is testcrossed with b r/b r. In 84 percent of the meioses, there are no chiasmata between the li
Citrus2011 [14]

Answer:

4 percent (4%)

Explanation:

A single crossover occurs between two (non-sister) chromatids belonging to homologous chromosomes. In this case, 16 percent of the meioses have a single crossover, thereby it will produce 8 percent of the chromosomes with the original (parental) combination in the progeny and the remaining 8 percent should be recombinants. From this result, it is reasonable to conclude that half of these recombinants should be 'Br' (and the other remaining 4 percent should be recombinants 'bR'), and therefore the answer is 4 percent (4%).

5 0
2 years ago
Please help need this before 6:00pm
defon

Answer:

its past 6pm

Explanation:

3 0
3 years ago
Name the substances excreted by skin glands. is the skin an important site of excretion
pychu [463]
Sebum, a fatty substance that serves as a water repellent it also serves as a natural antibacterial and antifungal agent,
yes the skin is important not only to excrete but its also a protective organ that absorbs oxygen and nitrogen
5 0
3 years ago
The sympathetic nervous system differs from the parasympathetic nervous system in that _________. a. the sympathetic nervous sys
OverLord2011 [107]

Answer:

One of the functional differences between the sympathetic and parasympathetic nervous system is that in the sympathetic nervous system first stage neurons have synapses a considerable distance from the target organ (Option C).

Explanation:

Sympathetic nervous system is part of the autonomic nervous system, and is responsible for producing the body's activating response, such as increased heart rate, pupil dilation, and increased muscle strength and endurance. The main neurotransmitters of this system are epinephrine (adrenaline) and norepinephrine.

<em>One of the fundamental characteristics of the sympathetic nervous system is its ability to release neurotransmitters even when they are far from the receptors, while the nerve ganglia of the </em><em>parasympathetic nervous system</em><em> must be close to the target organs.</em>

Learn more:

Autonomic nervous system control brainly.com/question/6820873

5 0
3 years ago
Other questions:
  • According to the pH scale, what is the approximate pH of seawater?
    6·1 answer
  • Most of a cell’s functions cannot use energy directly from the food we eat. Describe how the energy from food can be transferred
    11·1 answer
  • The nurse is assessing a patient who has just been rescued after falling into a frozen lake. the patient's body temperature has
    9·1 answer
  • Whit is difference between virus and virion
    12·1 answer
  • How do animals reproduce..can someone explain in detail please
    10·2 answers
  • How do villi help the lymphatic system?
    10·2 answers
  • Professional psychological associations require researchers to minimize infection, illness, and pain in animal subjects.
    5·2 answers
  • Please do it right ill give you a thanks
    5·2 answers
  • Imagine the CCA added to the 3' end of the tRNA consisted of DNA nucleotides. It (WOULD/WOULD NOT) be possible to connect an ami
    5·1 answer
  • Photosynthesis inputs
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!