BIOLOGY HIGH SCHOOL

Observing animal tracks is an example ofobservation, which is used to estimate population size.
A. mark and recapture
B. indirect
C. sampling
D. direct

Answers

Answer 1
Answer:

Answer:

The answer is B. Indirect!

Explanation:

Related Questions

Hemophilia is an X-linked recessive disorder (Xh) that is passed through generations and can be traced by using a pedigree. What is the probability that a female child of Charles and Marie would suffer from hemophilia?a. 0 percent b. 25 percent c. 50 percent d. 100 percent
The sequence of an mRNA transcript is UGGCACUCCAG. What will be the sequence of the template DNA strand from which it was synthesized? A. UGGCACUCCAG B. ACCGTGAGGTC C. ACCGUGAGGUC
How does osmosis explain the fact that a watery syrup forms when you put sugar on strawberries?
Earth can be divided into three zones based on differences and incoming solar radiation identify these zones describe their location and general climate also discuss how the sun's energy strikes each zone.
The major cause of ozone depletion is?

Two or more tissues together with a special job form a(n):heredity
brain
organ
neuron

Answers

Answer:

Organ

Explanation:

Answer:

organ

Explanation:

What are the stages of Meiosis I and Meiosis II in order as the happen.

Answers

Prophase I 

DNA replication precedes the start of meiosis I. During prophase I, homologous chromosomes pair and form synapses, a step unique to meiosis. The paired chromosomes are called bivalents, and the formation of chiasmata caused by genetic recombination becomes apparent. Chromosomal condensation allows these to be viewed in the microscope. Note that the bivalent has two chromosomes and four chromatids, with one chromosome coming from each parent.Prometaphase I 

The nuclear membrane disappears. One kinetochore forms per chromosome rather than one per chromatid, and the chromosomes attached to spindle fibers begin to move.Metaphase I 

Bivalents, each composed of two chromosomes (four chromatids) align at the metaphase plate. The orientation is random, with either parental homologue on a side. This means that there is a 50-50 chance for the daughter cells to get either the mother's or father's homologue for each chromosome.Anaphase I 

Chiasmata separate. Chromosomes, each with two chromatids, move to separate poles. Each of the daughter cells is now haploid (23 chromosomes), but each chromosome has two chromatids.Telophase I 

Nuclear envelopes may reform, or the cell may quickly start meiosis II.Cytokinesis 

Analogous to mitosis where two complete daughter cells form.
Meiosis I: 

Prophase I - Homologus chromosomes pair up (synapsis) and form a tetrad. Sometimes non-sister chromatids exchange genetic information during the process of crossing over. 

Metaphase I- Tetrads line up at the center of the cell. 

Anaphase I - Homologous pairs are split up. 

Telophase I/Cytokinesis - Two daugher cells form that have half the chromosome number of the parent cell but each chromosome consists of a pair of sister chromatids. 

Interkinesis - break period 

Meiosis II: 

Prophase II - A new spindle forms 

Metaphase II- Each chromosome lines up at the middle of the cell. 

Anaphase II - The sister chromatids are separated and move to opposite ends of the cell. 

Telophase II - Two new nuclei are formed in each cell. Each nucleus contains a haplod (n) number of chromosomes. 

Cytokinesis- End result of meiosis is 4 haploid daughter cells

Which of the following is a charateristics of the krebs cycle?A. Pyruvic acid is broken down into carbon dioxide
B. Glucose is broken down into pyruvic acid and carbon compounds
C. ADP is generated

Answers

the answer is A. Pyruvic acid is broken down into carbon dioxide 

Chemical composition describes? A. The types of atoms that make up a sample of matter B. The arrangement in a sample of matter c. All of the above

Answers

The right answer is A.

Since matter is generally composed of several pure bodies (chemical compounds and simple bodies), the chemical composition of a product furnishes the quantity or proportion of each of the pure substances which compose it; they are generically called components.

For answer B it is rather the definition of a chemical structure, it refers to both its molecular topology, its geometry (molecular geometry or space group for a crystal) and its electronic structure.
C.) All of the above ............

What is the primary source of energy for all
living organisms?

Answers

Answer: the sun

Explanation:

Please give me 5 stars!! :)
Thw primary source is the Sun

Which of the followingis radially symmetrical deuterostome invertebrate most closely related to chordates? . a. annelid. b. echinoderm. c. arthropod. d. mollusk

Answers

the one that is radially symmetrical deuterostome invertebrate that  most closely related to chordates is : B. echinoderm

This organisms doesn't have a backbone and known for being radially symmetrical. An example of a echinoderm is a Starfish

hope this helps

The correct answer is option B

Deuterosome is a subphylum of animals which means second mouth. It is also a sister clade of the Protostomia.

In deuterostomes the first opening becomes the anus but in case of protostomes the first opening becomes mouth.

The clade of deuterosomes is Echinoderm that is related to chordates.
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Uh…did i do this right?