answer.
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
BabaBlast [244]
2 years ago
8

Why are nutrients and gases most evenly distributed in a lake in the winter?

Biology
1 answer:
kvv77 [185]2 years ago
3 0

When the temperature reaches 0˚C (32˚F), the top layer of the lake freezes and turns into ice. In solid form, water molecules are less dense and thus ice floats on the top of the lake.

This solid barrier prevents any wind-induced mixing as well as protects the relatively warm water underneath. Furthermore, light is also blocked so that photosynthesis is inhibited during this period. As the lake water is separated from the atmosphere, no direct oxygen diffusion occurs.

All these factors together causes a more even distribution of nutrients and gases in a lake in winter.

You might be interested in
An experiment was conducted to investigate how temperature affects cellular respiration. The results are shown above. At what te
Anna007 [38]

Answer:

C

Explanation:

The production of ATP is greatest at 50o C as indicates by the production of CO2 in the Krebs Cycle

7 0
2 years ago
Read 2 more answers
The following DNA is being replicated and the origin of replication is in the middle of the sequence and marked with three stars
xxTIMURxx [149]

Answer:

5'GATCGTAA3'

5'ATTCTAGA3'

Explanation:

As requested in the question above, the primers were presented with 8 nucleotides, with the nitrogenous bases of the DNA, and in the 5'-3 'direction.

Primers are small fragments of DNA that are used by DNA polymerase to form new strands. The primes attach to pieces on the ribbon, through the complementarity of the nitrogenous bases, serving as a template for the DNA polymerase to create the new ribbon.

DNA polymerase uses primers at the origin of replication, and can follow the path from the right or from the left, depending on the primers used, for this reason, this question has two answers.

8 0
2 years ago
Which plant cell organelle helps maintain the shape of the cell by helping to maintain turgor pressure? A) cell membrane B) cell
ZanzabumX [31]

Answer: The correct answer is- C) vacuole.

Large central Vacuole is a specialized fluid filled organelle, present only in plant cell. It is primarily involved in providing support and shape to the plant cell by maintaining the turgor pressure ( a hydrostatic force that is produced due to the cell contents against the inner side of the cell wall). The central vacuole stores water ( that flows through osmosis) and maintains turgor pressure in a plant cell.

Turgor pressure provides mechanical support and helps in the growth and development of plant.

6 0
2 years ago
Read 2 more answers
Which of the following statements about deuterostomes is false? Which of the following statements about deuterostomes is false?
erastovalidia [21]

Answer:

<h2>All deuterostomes exhibit radial symmetry in their bodies.</h2>

Explanation:

deuterostomes :  All deuterostomes are triploblastic and have 3 layers:

i) endoderm, ii) mesoderm and iii) Ectoderm

In deuterostomes , a mouth that develops separately from the blastopore.

Taxonomically, the deuterostomes  defines as any member of the phyla (Chordata, Hemichordata, Echinodermata, etc) in which the anus appears first,  and it develops at or near the blastopore.

All deuterostomes have a coelom.  

All deuterostomes have a similar pattern of early embryonic development.

8 0
2 years ago
A ligand produces a response in a cell if it finds the right kind of
Alja [10]
It's looks like the right answer looks like this: A ligand produces a response in a cell if it finds the right kind of a. receptor.
6 0
2 years ago
Other questions:
  • Which of the following is a correct statement about a difference between xylem and phloem transport? A. Transpiration moves phlo
    5·1 answer
  • Determine whether each statement refers to species diversity or genetic diversity. Every organism in an ecosystem relies on othe
    15·2 answers
  • Taphonomists would probably conclude that hominins had scavenged meat from an animal carcass they did not kill if fossil animal
    10·1 answer
  • Damage to which structure will most directly disrupt water balance within a single celled organism?
    14·2 answers
  • If the area had experienced a wet season two years after the drought instead of a dry season, what kind of evolution would you e
    11·1 answer
  • Randy was diagnosed with an imbalance in the regulation of calcium in his blood. this imbalance was due to an abnormality in the
    13·1 answer
  • Which of the following is a true statement about lava that contains large amounts of dissolved gases? Lava that produces violent
    8·1 answer
  • In the Olestra experiment conducted by researchers at the Johns Hopkins University School of Medicine, the people who ate the Ol
    7·1 answer
  • Contrast the genetic content and the origin of sister versus nonsister chromatids during their earliest appearance in prophase I
    8·1 answer
  • In which two Earth regions is oxygen the second most abundant element by volume?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!