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katovenus [111]
3 years ago
6

What is true about heart valves?

Biology
1 answer:
NemiM [27]3 years ago
8 0
C.they separate atria from ventricles, and ventricles from the large arteries that leave them.
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What is the relationship between the salinity and density of ocean water?
const2013 [10]

second option

Explanation:

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4 0
3 years ago
A common element among all the river valley civilizations was:
Free_Kalibri [48]

Answer:

<u>A common element among all the river valley civilizations was irrigation systems that moved water to crops and settlements</u>

Explanation:

  • <u>River Valley civilizations where the civilizations that were found on the banks of the river like the Mesopotamia ,Indus valley civilization.</u>
  • <u>These civilization where agriculture based civilization as they depended on river for drinking water and irrigational activities</u>

8 0
3 years ago
Read 2 more answers
using similarities in body symmetry and other anatomical features to assign an organism to a clade involves 1. cladistics based
Jlenok [28]

The process of classifying an organism into a clade by comparing similarities in body symmetry and other morphological traits comprises - 1. body plan-based cladistics cladistics based on body plan, morphology-based phylogeny.

<h3>What is cladistics based on body plan ?</h3>

A method of biological taxonomy that organizes taxa in a branching hierarchy so that all members of a given taxon share the same ancestors and defines taxa uniquely by shared traits not present in ancestral groupings.

  • Cladistics is a method of biological classification in which groups of species (or "clades") are assigned based on theories of most recent shared ancestry.
  • The evolutionary link between recent ancestors and descendants, or the course of evolution, is shown via cladistics. An aid to representing it is a cladogram. Since clades serve as the foundation for phylogenetic trees, cladistics is a component of the phylogeny.
<h3>What is molecular-based phylogeny ?</h3>

Molecule structure is used in molecular phylogeny to shed light on an organism's evolutionary connections.

  • A so-called phylogenetic tree represents the findings of a molecular phylogenetic research. DNA, RNA, and proteins are components of all living things.
  • Molecular phylogenetics creates a phylogenetic tree by drawing conclusions about the evolutionary links that derive from molecular evolution.

<h3>What is Morphology-based phylogeny ?</h3>

Using anatomical features, morphological phylogenetics infers evolutionary trees. Node: A branching point when an ancestral lineage splits into two (or more) daughter lineages in an evolutionary tree.

The ability to discuss the phylogeny of fossil taxa and how they relate to modern taxa is the unquestionable benefit of morphological data. However, their strategy prevents us from addressing the situation of extinct taxa for which there is no way to gather DNA data (i.e., almost all of them).

To know more about Phylogeny please click here ; brainly.com/question/64686

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7 0
1 year ago
How to prevent bias in scientific investigation
Mnenie [13.5K]
If you want to prevent yourself from being bias you must not base anything off of your opinion, or what you think is the right answer.

Everything must be strictly facts with no intention of trying to persuade the reader. If you truly believe that you need something in your paper, make sure you can support your claim with actual facts (it is very important that you back up all of your claims with actual facts)

Refrain from using things like:
•In my opinion
•I think
•I believe
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•Everyone knows that
4 0
3 years ago
How would the absence of gravity affect the formation of planets
Cerrena [4.2K]

Answer:

The rocks and debris would never accrete into a planet.

Explanation:

Gravity is an attraction force and dependents on the mass of the objects but in the absence of the force, the rocks and debris would not come together to form a clump. So, we can say that in the absence of gravity, the rock and debris would never accrete into a planet. So,  we can say that in the absence of gravity, the rock and debris would never accrete into a planet.

7 0
3 years ago
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