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
Debora [2.8K]
3 years ago
7

Explain two difficulties an ecologist might have in counting a population of migratory birds

Biology
1 answer:
pshichka [43]3 years ago
5 0
1. She might count some of the birds multiple times.

2. There's way too many birds and species to possibly count ALL of them perfectly
You might be interested in
This has to do with the metric system
DIA [1.3K]
The answer is to your question "How many meters is 50 cm?" is 0.5m
3 0
3 years ago
Select the best answer for the question
likoan [24]
The Answer is A

Explanation:

End hunger, achieve food security and improved nutrition and promote sustainable agriculture.
6 0
2 years ago
b cells are white blood cells that work by ___________________, whereas t cells attacks foreign invaders __________________.
Sloan [31]

Answer:

your answer is b cells are white blood cells that work by producing antibodies, whereas t cells attack foreign invaders directly.

Explanation:

flashcards

6 0
2 years ago
A person infected with the human immunodeficiency virus may have any symptoms for a period of time. During this period, the viru
podryga [215]

Answer:

It effects the body by causing symptoms like muscle aches, low-grade fever, headaches, sometimes rashes, swelling of the lymph glands may also occur, and flu-like illness. These are symptoms after a few weeks of being infected.

5 0
3 years ago
__________ is the neurotransmitter used to carry a message from a motor neuron to a skeletal muscle fiber.
KatRina [158]
Acetylcholine (ACh)

Acetylcholine is an organic chemical that functions in the brain and body of many types of animals as a neurotransmitter.
6 0
2 years ago
Other questions:
  • Which of the following describes the correct pathway by which sound is transmitted between the ossicles of the middle ear?
    9·2 answers
  • Which best statement best describes what a thylakoid does during photosynthesis
    5·2 answers
  • The point where the demand curve and the supply curve intersect represents __________.
    6·1 answer
  • Producers, like this plant, take in oxygen and release carbon dioxide during __________________ , just like animals and other li
    10·2 answers
  • What is the original source of energy for most living organisms?
    5·2 answers
  • List 3 common food sources of soluble fiber
    13·2 answers
  • Compare and contrast in the illustration below, which vehicle has the greatest kinetic energy? Explain your answer.
    10·1 answer
  • What can affect the rate of a chemical change?
    11·1 answer
  • Discuss four contributing factors that may lead to an increased of learners abusing substances at school
    12·1 answer
  • Brad is swimming in the ocean on a hot sunny day. he finds the water to be much colder than the sand on the beach, even though t
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!