Ecological succession can end when a community is not replaced by another one. This community is called a "climax community." Using the illustrations, which of the following would dominate the climax community shown in the ecological succession of the pond?
A
tall trees

B
low-growing plants

C
green algae

D
tall-growing grasses

Answer:

The correct answer is - reflex response.

Explanation:

If an individual touch something hot accidentally and immediate removal of the hand takes place, this occurs involuntarily. This type of coordination reaction called reflex action. Reflex action is an involuntary response that takes place due to a specific stimulus.

These stimuli result in an unplanned sequence of action or movement. Removing hand in response of contact to a hot object, change of the pupil of the eyes in response of light, coughing in response of some irritants in nassal passage and others. The reflex arch is the pathway they follow to carry out reflex action.

Answer:

3

Explanation:

Answer: 4

Explanation: THE OTHER ANWSER IS WRONG

Bacteria cause bacterial infections. Viruses cause viral infections. Antibiotic medicines kill or keep many bacteria from growing but don't treat viruses.

A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea.

The virus works by damaging the wall and the lining of the alveolus and capillaries. The debris from the damage, which is plasma protein accumulates on the alveolus wall and thickens the lining. As the walls' thicken, the transfer of oxygen to the red blood cells is impaired.

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Answer:

100% Heterozygous Dominant (Rr)

Hope this helps!

Answer:

true

Explanation:

An air mass acquires its characteristics from the region over which it forms, called its source region. ... Cold air masses tend to flow toward the equator, and warm air masses tend to flow toward the poles. This movement of air masses brings heat to cold area

Answer:

The correct answer is -The brain and the spinal cord respond and sends a signal down a motor neuron to a specific sensory stimulus.

Explanation:

Sensory receptors sense the changes that take place in the environment that is called stimuli by sensory neurons that transmit the signal from the sensory receptors to the brain.

The brain and the spinal cord make the central nervous system. This coordinates a response to a specific stimulus and sends a signal down a motor neuron and send a signal to the effector by motor neurons.

Answer:

O Mitochondria

Explanation:

Answer:

b

Explanation:

The mitochondrion (plural mitochondria) is a membrane-bound organelle found in the cytoplasm of eukaryotic cells. It is the power house of the cell

Answer:

Applications:

- silence gene expression of target genes

- activate gene expression of target genes

- determine the role of DNA methylation and histone modifications (methylation, acetylation, etc) on specific regulatory sites (e.g., enhancer sequences)

Explanation:

The CRISPR/Cas9 system can be repurposed to edit the epigenome of living cells. For this purpose, it is required 1-to fuse a catalytically inactive 'dead' Cas9 enzyme with enzymes involved in epigenetic mechanisms (e.g., DNA methyltransferases, histone deacetylases, etc) capable of activating or deactivating gene expression, and 2-to design single-guide RNAs (sgRNAs) complementary to the sequence of interest (i.e., target sequences whose epigenome landscape we are trying to modify). For example, dCas9 gene has been fused with the DNA methyltransferase 3a (Dnmt3a) gene to create a dCas9-DNMT3A complex which can be combined with a specific sgRNA in order to study the effects of DNA methylation at a particular gene. These CRISPR/Cas9-mediated epigenome editing systems have shown to be very useful to understand how epigenome drives chromatin folding and dynamics at specific genomic sites (loci), and thus regulate gene expression at the transcriptional level.

Answer:

The cell body, or soma, contains the nucleus of the cell and its associated intracellular structures. Dendrites are specialized extensions of the cell body.

Explanation:

Answer:

C

Explanation:

Answer:

C

Explanation:

Throwing stuff away increases pollution

Using paper one time means you need to throw it away

Riding everywhere in a car eventually leads to gas being burnt (with few exceptions)

Answer:

Negative feedback

Explanation:

Try to bring the variable (temperature) down to normal set point is negative feedback

Answer:

his friend can push the rock with him (on the left side) for his friend could pull (from the right side)

Answer:

Explanation:

Due to technical problems, you will find the complete explanation in the attached files

Answer:

True

Explanation:

The calcitonin/calcitonin gene-related peptide (CALCA) gene is used to encode different peptide sequences (i.e., calcitonin hormone, calcitonin-related peptides and katacalcin) through alternative RNA splicing. These peptides have different functions. Calcitonin is a hormone mainly produced by cells of the thyroid gland, which is involved in the control of levels of calcium and phosphate in the blood. Moreover, katacalcin is a peptide synthesized from the same precursor of calcitonin (and therefore also mainly produced by cells of the thyroid gland), which is implicated in both calcium regulation and skeletal maintenance. Finally, the calcitonin gene-related peptide (CGRP) is a peptide mainly produced by sensory nerves (type Aδ fibers ), which is involved in pain pathways. The CALCA gene has attracted considerable attention from geneticists because it is specifically expressed in neuroendocrine tissues in normal conditions and abnormally induced in septic conditions (i.e., during the body's extreme response to an infection).

Answer:

Nature selects best suited organisms having behaviours that help in the survival of organisms in that environment.

Explanation:

Natural selection can shaped the behaviors that are learned by the organisms because these behaviours helped organisms in their survival. Those organisms will be selected by the nature which can withstand the changing environmental conditions. Organisms adopt different behaviours in order to survive harsh environmental condition and these behaviour shaped by the natural selection in that organism so that they survive and grow in that environment.

Answer:

4 beats

Explanation:

The number of beats of the heart that will take blood from Aorta to The Brain

n = Distance  from Aorta to brain / distance per beat

Given that distance per beat = 7.5 cm ( calculated value outside scope of question  using the data attached below)

n = 30 cm / 7.5 cm

  = 4 beats

rose leaves licth leave

Answer: Organisms depend on other organisms and on the nonliving things in an ecosystem to meet their basic needs for food, water and protection. 3. Plants use energy from the sun to produce their own food from air and water.

Explanation:

Answer:

A

Explanation:

As with DNA replication, partial unwinding of the double helix must occur before transcription can take place, and it is the RNA polymerase enzymes that catalyze this process. ... The DNA molecule re-winds to re-form the double helix. In the first step, transcription, the code in the DNA is copied to a different nucleic acid, RNA.  In the second step, translation, the nucleic acid code in RNA is changed into a new form: amino acids. This step is called translation because the nucleic acid language is being "translated" into the protein language.

Answer:

Boil water into steam

Explanation:

As the turbine blades turn, they drive generators that make electricity. Nuclear plants cool the steam back into the water in a separate structure at the power plant called a cooling tower, or they use water from ponds, rivers, or the ocean. The cooled water is then reused to produce steam.