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
Alex Ar [27]
3 years ago
6

15. These photosynthetic organisms can live in extreme environments, sometimes harnessing energy from chemicals, and are among s

ome of the oldest organisms on Earth.
Οalgae
O protists
O cyanobacteria
O diatoms
Biology
1 answer:
maxonik [38]3 years ago
4 0

Answer:

cyanobacteria

Explanation:

the answer of this question the 3rd one, because if you were to think and look up the oldest Bactria it would be that answer.

You might be interested in
How many of the 8 actions mentioned in the May 7, 1933 Fireside Address provided jobs for unemployed people?
poizon [28]

Answer:

1 quarter of a million especially young men who have dependents to go into the forestry and flood prevention work.

4 0
2 years ago
How could you determine if a blood sample is compatible to transfuse from one individual to another in an emergency situation, i
Gemiola [76]
If blood typing is not available in an emergency situation, O-Negative blood is universally accepted by all blood types because it is absent of any antibodies. Therefore, if O-Neg blood is on hand in emergency situations, it can be given to anyone.
5 0
3 years ago
Why are enzymes specific to a certain reaction?
frozen [14]
Enzymes bind with chemical reactants called substrates. There may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. In some reactions, a single-reactant substrate is broken down into multiple products. ... The enzyme's active site binds to the substrate.
8 0
3 years ago
The scientific definition of ______ refers to changes in a species or population over time. systematics genetics evolution biolo
natita [175]

The scientific definition of evolution refers to changes in a species or population over time.

Evolution is a long-term process. It may take millions of years and several generation for an evolution to occur. The cause of evolution can be genetic as well as environmental. The evolution is a result of mutation. Evolution generally gives rise to new species, that is different from its ancestral population.

Population is a group of similar type of organisms.  These organisms live in the same habitat, require same resources and have same kind of habits. The most essential criteria that defines a population is that the organisms of a population can mate with each other and produce offspring.

To know more about evolution, here

brainly.com/question/13492988

#SPJ4

4 0
2 years ago
The principle hormones produced by the thyroid gland are.
Alex73 [517]

Answer:

T3 (tri-iodothyronine) and T4 (thyroxine).

Explanation:

7 0
3 years ago
Other questions:
  • What is so bad about coal
    7·2 answers
  • Primary succession differs from secondary succession in what way? ch 54
    7·1 answer
  • What is the power house of the cell?
    15·2 answers
  • An experiment is conducted to determine the effects of energy drinks on an individual’s heart rate groups A and B have matched f
    13·1 answer
  • What type of boundary recycles crust into the mantle?
    13·1 answer
  • Which would be the best tools to measure the density of a small piece of silver ore
    15·1 answer
  • In most natural populations rapid exponential growth is unsustainable. As populations increase, environmental resistance causes
    14·1 answer
  • The sex hormone testosterone _____.
    14·1 answer
  • What was the optimum temperature for bromelain activities?
    6·1 answer
  • Photosynthesis ceases when leaves wilt, mainly because A. the chlorophyll in wilting leaves is degraded. B. accumulation of CO²
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!