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
lina2011 [118]
3 years ago
12

During which era did the first fish evole

Biology
1 answer:
Semenov [28]3 years ago
4 0
During the cambrian explosion
You might be interested in
Explain the differences between Bacteria and Decomposers?​
zepelin [54]

Answer:

difference between bacteria and decomposer

Explanation:

Decomposers like bacteria and fungi don't eat their food, they decompose it externally. Also, decomposers consume nutrients on a molecular level while detritivores eat large amount of decaying material and excrete nutrients. ... In addition to fungi, bacteria are also decomposer organisms.

7 0
3 years ago
Read 2 more answers
What is the relationship between combustion and plants? (Using the picture)
Scorpion4ik [409]
During photosynthesis, plants use carbon dioxide and produce oxygen. During metabolism oxygen is used and carbon dioxide is a product. Humans impact the carbon cycle during the combustion of any type of fossil fuel, which may include oil, coal, or natural gas
6 0
3 years ago
Help Plez I Beg You
topjm [15]
Pretty sure the answer would be C, because you need the warm and cold air to mix.
4 0
3 years ago
Helps activate T cells, which are produced in bone marrow but mature in the thymus gland<br> HELLPP
love history [14]

Answer:

peptide antigens by MHC class II molecules

Explanation:

Helper T cells are activated by peptide antigens by MHC class II molecules. These antigens express on the surface of antigen-presenting cells (APCs). After activation, the T helper cells divide and secrete cytokines  to assist the immune response.

3 0
3 years ago
Explain the factors that affect the rate of photosynthesis in the early afternoon.
makvit [3.9K]

Answer:

Several factors can affect the rate of photosynthesis: light intensity. carbon dioxide concentration. temperature.

Explanation:

3 0
3 years ago
Other questions:
  • How do parasitic flatworms evade their host's immune system?
    5·1 answer
  • In fruit flies, L = long wings and I = short wings. When a long winged fly is crossed with a short winged fly, the off spring ex
    10·1 answer
  • After a 10-mile bike ride you sit under a tree and relax. your _____ nervous system is kicking in.
    15·2 answers
  • Which of these pairings is incorrect?
    8·1 answer
  • MULIPLY CHOSE
    10·2 answers
  • Thomas Malthus was an economist who influenced Darwin's developing theory of evolution. Malthus observed that the birthrate amon
    12·1 answer
  • 20) Image you discover a new element. After collecting your millions of dollars and your
    9·1 answer
  • PLEASE!!!!!!! HURRY
    15·1 answer
  • What organisms break down chemical wastes
    5·2 answers
  • Which is the correct order in the scientific process?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!