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
lana66690 [7]
3 years ago
12

Since the endangered species act of 1973 was passed, about ______ species of animals and ______ species of plants and lichens ha

ve been placed on the list of threatened or endangered species.
Biology
1 answer:
shepuryov [24]3 years ago
3 0
Since the endangered species act of 1973 was passed, about 575 species of animals and 750 species of plants and lichens have been placed on the list of threatened or endangered species.
You might be interested in
Is an aphid a producer
Umnica [9.8K]
No, producers produce their own food like plants that use photosynthesis to produce sugar whilst aphids cannot produce their own food and have to feed of other plants.
5 0
4 years ago
Explain how wood produces chemical energy
andrezito [222]

Wood, when dry, stores chemical energy. This chemical energy is released as the wood burns, and it is converted into heat, or thermal energy. This also produces light energy. As a result of burning, the wood turns into an entirely new substance - ashes. Wood, a form of fuel with lots of potential energy stored in its covalent bonds, will react with molecules of oxygen in the air in a dramatic chemical reaction we call fire. The complex molecules in the wood have 'high energy' covalent bonds, as do the molecules of oxygen.
I hope this helped:))
4 0
2 years ago
Help please with this assignment
brilliants [131]

Answer:  This answer is for all the questions: Chargaff's rules state that DNA from any species of any organism should have a 1:1 stoichiometric ratio of purine and pyrimidine bases (i.e., A+G=T+C) and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine.

Explanation:

8 0
3 years ago
What did Ozzie's ancestors come over on? (osmosis jones movie question)
SIZIF [17.4K]
They came over on an <span>umbilical cord.</span>
7 0
4 years ago
Read 2 more answers
Based on cell structure, all life forms can be placed into two categories called
djyliett [7]
Prokaryotic - cells that don’t contain a nucleus, for example bacteria cells

Eukaryotic - cells that contain a nucleus, for example plant and animal cells
5 0
2 years ago
Other questions:
  • "which of these illustrates the secondary structure of a protein?"
    10·1 answer
  • Compare and contrast science with pseudoscience
    11·1 answer
  • The brain waves of sleeping infants appear to be qualitatively different from those of an adult who is dreaming.
    7·1 answer
  • Which of the following best characterizes a covalent bond?
    9·1 answer
  • How do cellular respiration and photosynthesis work together to recycle matter
    8·2 answers
  • Give me half a tanker of iron," he joked, "and I'll give you the next ice age." Explain this quote from John Martin's original a
    11·1 answer
  • Which shows the levels of organizational hierarchy listed from least complex to most complex?
    9·1 answer
  • HEEELLLPPP FASTTTT PLSSSSS
    10·2 answers
  • Which type of cells are shown in the diagram? (diagram in link/screenshot)
    5·1 answer
  • Closed systems in
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!