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
Maksim231197 [3]
3 years ago
8

Why do scientists think that early amphibians had lungs?​

Biology
1 answer:
anzhelika [568]3 years ago
3 0

Answer: Scientists think that early amphibians had lungs becuase they needed efficient oxygen uptake to support their metabolism. Higher rates of metabolism are needed on land, becuase of this scientist think that early amphibians breathed air with lungs.  

Explanation:

You might be interested in
The water cycle is also referred to as the _______ cycle.
Harman [31]
The water cycle is also referred to as the hydrologic cycle. 
6 0
4 years ago
Biological differences between males and females, other than contrasts in breasts and genitals, is
artcher [175]
Answer:  "sexual dimorphism" .
_________________________________________________
7 0
3 years ago
The process by which an individual seeks out environments that correspond to their genotypic characteristics is described as the
Lilit [14]

Answer:

Active genotype - environmental effects

Explanation:

There are primarily three types of co-relation between genotype and environment which are as follows –  

a) Passive genotype –environment effect – This depicts the relationship between the genetic characteristics acquired by a child from his/her parents and the environment in which he/she is raised.  

b) Reactive genotype –environment effect – This represents a relationship between genetically acquired behaviour from parents and the reaction corresponding to such behaviour.  

c) Active genotype –environment effect – This represents a relationship between genetic tendency of an individual and the environment condition selected by an individual .

5 0
4 years ago
What theory used the practice of introspection to study consciousness?
egoroff_w [7]
Structuralism used the practice of introspection to study consciousness.

Hope this helps. 
7 0
3 years ago
A ball was kicked by a player, the ball was stationary, then it gains a velocity of 5 m/s North. Did the ball accelerate or no?
dimaraw [331]

Answer:

Yes, it accelerates

Explanation:

We have that:

The ball was stationary implies that its initial velocity, u = 0

It gained 5m/s means that its final velocity, v = 5m/s

Using first law of newton, we can determine whether it accelerates or not.

v = u + at

Substitute values for v and u

5 = 0 + at

5 = at

Make a the subject

a= \frac{5}{t}

<em>This implies that the ball accelerates over a period of time t</em>

<em></em>

Another way to tell if it accelerates or not is to consider the change in velocity.

When there is an increment in velocity of an object, the object accelerates.

In this case, the velocity increases from 0 to 5. Hence, we can conclude that it accelerates

6 0
3 years ago
Other questions:
  • What is meant by the following statement about the cell membrane? The cell membrane is said to be semipermeable.
    7·2 answers
  • What store color pigments
    14·1 answer
  • What is the responsibility of a scientist?
    7·2 answers
  • Describe two ways in which animals must maintain homeostasis
    15·1 answer
  • A client is admitted to the coronary care unit with atrial fibrillation and a rapid ventricular response. the nurse prepares for
    11·1 answer
  • Answer the two questions, please.
    15·1 answer
  • What is cell differtiation?
    15·2 answers
  • The _ of each element have a characteristic number of _ arranged in _. The number of _ determines what types of bonds or ions th
    5·1 answer
  • Exposure to pesticides or industrial chemicals _______. a. always has immediate and apparent side effects b. decreases the risk
    6·1 answer
  • Which type of direct increases glycogen stored in muscle and endurance time at marathon speed most? high fat mixed high carbohyd
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!