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
MariettaO [177]
2 years ago
13

Fossils up to 75,000 years old can be dated with ______.

Biology
2 answers:
kodGreya [7K]2 years ago
7 0
Fossils up to 75,000 years old can be dated with Carbon-14.
 
Radio isotopes can be used for the age determination of the fossils. Carbon-14 is a common isotope which is used for that purpose. But the half- life of the Carbon-14 is relatively small as 5730 years. That means the amount of Carbon-14 will be half after every 5730 years. Hence, decay is very fast. So Carbon-14 cannot be used forage determination which is more than 75000 years due to the low accuracy.
tester [92]2 years ago
7 0
Carbon-14

Hope this Helps!
You might be interested in
Gerri says that a spider use their fangs for the same purpose that crustaceans use their claws. Alana disagrees and says that sp
Lelechka [254]
According to a new study, spider's fangs are considered to be natural needles that they use for piercing the skeletons of prey and delivering the kiss of a venom. The fangs can also be used as a defense mechanism towards their predator or towards humans.

On the other hand, the crustacean's claws, like the crab claws can be used for protection, as well as for communication, excavating burrows, attracting mates and gathering food.

While the centipedes use their claw to grab their prey and inject venom to kill it or to protect itself from being harmed.

Considering these definitions, we can say the Gerri and Alana are both correct since the spider uses its fangs to inject venom like the centipede and to protect itself like the crustaceans.
4 0
3 years ago
What do you call the red pigment found in vertebrates that functions in oxygen transport?
slava [35]
There are actually two red pigments found in certain vertebrates that function in oxygen transport (or storage). Hemoglobin is present in the blood of most vertebrates and binds oxygen molecules, in order to transport them to body tissues in need of oxygen for energy (ATP) production.
Myoglobin, mainly in mammals, is a protein (enzyme) found in red (skeletal) muscle cells, that aids in binding oxygen when it's plentiful being delivered via blood. The purpose is that in high stress, low oxygen situations such as strenuous exercise, the myoglobin releases its bound oxygen to provide it to the starving overworked muscle cells.
**Fun fact: it's the hemoglobin that gives the bright red color of blood when it's bound to oxygen, and the myoglobin of mammal flesh gives it the typical pinkish-red hue that is seen in mammalian meat (veal, steak, ham, venison, bison, etc.). Other non-mammalian animals (fish, birds, frogs, snake, alligator, etc.) tend to have lighter-colored skeletal muscle meat due to the lack of myoglobin, amongst other factors.
6 0
3 years ago
Pleaseee pleasee help :)
Sedaia [141]

Answer: first one is a second d

Explanation:

8 0
3 years ago
Read 2 more answers
Record your observations of the roots of the bean and radish plants in the appropriate data chart. Be sure to include a sketch o
Nastasia [14]

1) Generally speaking, bean plants have fewer than 100 nodules, soybean plants have several hundred, and peanut plants can have 1,000 nodules or more. Cut-open nodules from a legume displaying the reddish-pink colour of an active, healthy nodule.

2) Both of them have roots that extend far into the cup in an effort to find food to survive. Both of them have nodules.

3) The radish just occupies the cup's centre; the beans basically fill the entire space. not as many nodules as a bean plant.

what are nodules ?

On the roots of plants, particularly legumes, that collaborate with bacteria that fix nitrogen, root nodules can be seen. Capable plants develop a symbiotic association with rhizobia, a host-specific strain of bacteria, when nitrogen is scarce.

Learn more about nodules here:-

brainly.com/question/13594667

#SPJ1

3 0
2 years ago
How does our specific body defense mechanism work to overcome an illness? *
PSYCHO15rus [73]

Explanation:

C. Producing Antibodies

5 0
3 years ago
Other questions:
  • In which plants' life cycle does double fertilization occur?
    12·2 answers
  • You discover a new species of aquatic mite. To describe its ecological function in the food web, you study its entire life cycle
    15·1 answer
  • Which element is found in nucleic acids but not in amino acids
    11·1 answer
  • What is the Part of the male reproductive system where sperm is temporarily
    10·2 answers
  • I need help on question b please help!
    11·1 answer
  • Which genetically engineered medicine is a hormone that controls the level of glucose in humans? insulin the flu vaccine the hum
    5·2 answers
  • Write three observations that could help you identify a fish.
    13·2 answers
  • Which of the following statements regarding biopolymers is false?
    15·1 answer
  • PLS HELP
    9·2 answers
  • Need help with number 2 and 5 ​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!